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You searched for: Subject term angle of repose Remove constraint Subject term: angle of repose Subject term bulk density Remove constraint Subject term: bulk density
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1. A methodical calibration procedure for discrete element models

Author:
Michael Rackl; Kevin J. Hanley
Source:
Powder technology 2017 v.307 pp. 73-83
ISSN:
0032-5910
Subject:
angle of repose; bulk density; friction; glass; kriging; models; modulus of elasticity; powders; rolling
Abstract:
... Researchers and engineers have widely adopted the discrete element method (DEM) for simulation of bulk materials. One important aspect in such simulations is the determination of suitable material and contact law parameters. Very often, these parameters have to be calibrated because they are difficult to measure or, like rolling friction, do not have a physical analogue. Moreover, coarse-grained p ...
DOI:
10.1016/j.powtec.2016.11.048

2. A study of moisture dependent changes in engineering properties and debranning characteristics of purple wheat

Author:
Praveen Saini; Nitin Kumar; Sunil Kumar; Peter Waboi Mwaurah; Vijay Singh
Source:
Journal of food processing and preservation 2021 v.45 no.11 pp. e15916
ISSN:
0145-8892
Subject:
angle of repose; anthocyanins; bran; bulk density; color; databases; debranning; friction; hardness; porosity; water content; wheat
Abstract:
... To assess the efficient storage and processing yields, simultaneously reducing the qualitative and quantitative losses from wheat grains, it is necessary to consider and study their engineering properties. The present study was conducted to determine the moisture‐induced changes in the engineering properties and debranning characteristics of colored wheat varieties. Wheat was tempered to three moi ...
DOI:
10.1111/jfpp.15916

3. A study on engineering and physical properties of carrot (Daucus carota. L) seeds

Author:
P. Tamilselvi; D. Manohar Jesudas
Source:
Trends in Biosciences 2015 v.8 no.22 pp. 6319-6322
ISSN:
0976-2485
Subject:
Daucus carota; angle of repose; bulk density; carrots; friction; porosity; seed weight; India
Abstract:
... The physical properties of carrot seeds were studied to determine their suitability for mechanical metering. The physical properties namely size, shape, sphericity, thousand seed weight, angle of repose, true density, porosity, bulk density and coefficient of static friction were measured for two commercial varieties of carrot seeds i.e. Nantes (TE) and New Kuroda(NK) cultivated on hilly regions o ...

4. A study on the modelling method of maize-seed particles based on the discrete element method

Author:
Long Zhou; Jianqun Yu; Yang Wang; Dongxu Yan; Yajun Yu
Source:
Powder technology 2020 v.374 pp. 353-376
ISSN:
0032-5910
Subject:
angle of repose; bulk density; corn; models; roughness; technology; China
Abstract:
... To build a widely applicable modelling method for maize seed particles, nine major maize varieties in mainland China are analysed. According to the analysis, maize seed particles can be simplified into 5 shapes, i.e., horse-tooth shape, truncated triangular pyramid shape, ellipsoid cone shape, spheroid shape and irregular shape, and there is a certain functional relationship between the characteri ...
DOI:
10.1016/j.powtec.2020.07.051

5. Analysis of physicochemical and thermo-mechanical characteristics of Iranian black seed (Nigella oxypetala Boiss)

Author:
Seyed Mohammad Taghi Gharibzahedi; Seyed Mohammad Mousavi; Mohammad Jouki; Mohammad Ghahderijani
Source:
International journal of food engineering 2012 v.8 no.3 pp. -
ISSN:
1556-3758
Subject:
Nigella; aluminum; angle of repose; bulk density; chemical analysis; energy; engineering; fatty acid composition; friction; mineral content; nutritive value; plywood; porosity; processing equipment; seeds; specific heat; steel; thermal conductivity; thermal diffusivity; water content
Abstract:
... The study experimentally scrutinized nutritional and engineering properties of Iranian black seed at a moisture content of 5.1% (w.b.) in order to design processing equipment and machinery for various post-harvest operations. Analysis of chemical composition, mineral content and fatty acid profile illustrated that the seeds had high nutritional value. Bulk density, true density and porosity were 5 ...
DOI:
10.1515/1556-3758.2703

6. Application of quality by design for optimization of spray drying process used in drying of Risperidone nanosuspension

Author:
Anu Nair; Dignesh Khunt; Manju Misra
Source:
Powder technology 2019 v.342 pp. 156-165
ISSN:
0032-5910
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; angle of repose; atomic force microscopy; bulk density; compressibility; crystal structure; hardness; particle size; powders; solubility; spray drying; temperature
Abstract:
... The objective of present study was to optimize spray drying of Risperidone (RIS) nanosuspension for achieving lower particle size, higher yield and good compressibility of spray dried powder using Quality by design approach. RIS nanosuspension was prepared by anti-solvent precipitation technique using poloxamer 68 and Poloxamer 127 as stabilizers.3 level 2 factorial design was applied using two in ...
DOI:
10.1016/j.powtec.2018.09.096

7. Application uniformity assessment of deep fertilizer placement machine for urea briquettes

Author:
Swapnil Choudhary; Mukesh Jain; Vijaya Rani; Naresh
Source:
Agricultural engineering today 2021 v.45 no.4 pp. 29-36
ISSN:
2230-7265
Subject:
angle of repose; bulk density; calibration; energy use and consumption; fertilizer rates; fertilizers; field capacity; friction; socioeconomic factors; standard deviation; urea
Abstract:
... Deep placement of fertilizer has not only a positive agronomic and socioeconomic impact, but also an environmental benefit. A Deep Fertilizer Placement Machine was evaluated for uniformity of fertilizer application at different level of urea briquette in fertilizer box. Various physical and engineering properties of urea briquette viz. size, shape, bulk density, briquette weight, angle of repose a ...
DOI:
10.52151/aet2021454.1545

8. Artificial Neural Network Modeling of Distillers Dried Grains with Solubles (DDGS) Flowability with Varying Process and Storage Parameters

Author:
Bhadra, Rumela; Muthukumarappan, K.; Rosentrater, Kurt A.
Source:
Cereal chemistry 2011 v.88 no.5 pp. 480-489
ISSN:
0009-0352
Subject:
angle of repose; bulk density; cooling; distillers grains; drying; least squares; neural networks; storage conditions; temperature
Abstract:
... Neural network (NN) modeling techniques were used to predict flowability behavior of distillers dried grains with solubles (DDGS) prepared with varying levels of condensed distillers solubles (10, 15, and 20%, wb), drying temperatures (100, 200, and 300°C), cooling temperatures (-12, 25, and 35°C), and storage times (0 and 1 month). Response variables were selected based on our previous research r ...
DOI:
10.1094/CCHEM-12-10-0179

9. Biomass feeding in a dilute pneumatic conveying system

Author:
Thais L.C. Gomes; Giovani A. Lourenço; Carlos H. Ataíde; Claudio R. Duarte
Source:
Powder technology 2021 v.391 pp. 321-333
ISSN:
0032-5910
Subject:
air; angle of repose; biomass; bulk density; corn; corn cobs; corn straw; equations; renewable energy sources; rice hulls; silos; technology; water content; wheat bran
Abstract:
... Biomass is a renewable energy source of increasing industrial interest. However, due to particle physical characteristics, operational problems are verified during its transport, which is usually associated with the control of the feeding process. In this context, a feeding system was designed, specifically for the control of biomass flow rate, in a positive pressure pneumatic conveying line, whic ...
DOI:
10.1016/j.powtec.2021.06.020

10. Bulk flow properties of model food powder at different water activity

Author:
Chang, K.S.; Kim, D.W.; Kim, S.S.; Jung, M.Y.
Source:
International journal of food properties 1998 v.1 no.1 pp. 45-55
ISSN:
1094-2912
Subject:
mathematical models; foods; equations; potato starch; flow; cohesion; bulk density; wheat protein; powders; protein content; water activity; angle of repose; prediction
DOI:
10.1080/10942919809524564

11. Calibration of DEM models for irregular particles based on experimental design method and bulk experiments

Author:
Haili Zhou; Zhanqi Hu; Jigang Chen; Xuan Lv; Nan Xie
Source:
Powder technology 2018 v.332 pp. 210-223
ISSN:
0032-5910
Subject:
Poisson distribution; algorithms; angle of repose; bulk density; calibration; computer software; experimental design; graphene; models; powders
Abstract:
... Discrete element method (DEM) is widely used in particle modeling and related applications. DEM modeling requires a large number of micro particle parameters, which are difficult to measure for irregular particles, thus the parameter calibration method is introduced. This paper presents a new DEM parameter calibration method: taking the angle of repose and bulk density of expanded graphite (EG) pa ...
DOI:
10.1016/j.powtec.2018.03.064

12. Changes to the physicochemical characteristics of wheat straw by mechanical ultrafine grinding

Author:
Yang Yang; Guanya Ji; Weihua Xiao; Lujia Han
Source:
Cellulose 2014 v.21 no.5 pp. 3257-3268
ISSN:
0969-0239
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; angle of repose; bulk density; cadmium; cellulose; crystal structure; grinding; hemicellulose; lead; microstructure; particle size; powders; scanning electron microscopy; thermal stability; thermogravimetry; vibration; water holding capacity; wheat straw
Abstract:
... To investigate changes on the physicochemical characteristics of wheat straw by mechanical ultrafine grinding, wheat straw powders of four different particle sizes and distributions were produced using a sieve-based Retsch ZM100 grind mill and CJM-SY-B ultrafine vibration grind mill. Changes on the microstructure and physicochemical characteristics of the different powders were assessed by scannin ...
DOI:
10.1007/s10570-014-0381-5

13. Characterisation of Madhuca longifolia seed in relation to processing and design of equipment

Author:
C. Shashikumar; R.C. Pradhan; S. Mishra
Source:
Quality assurance and safety of crops & foods 2018 v.10 no.3 pp. 215-221
ISSN:
1757-837X
Subject:
Madhuca longifolia; angle of repose; ash content; bulk density; carbohydrates; deformation; energy; energy requirements; equipment design; flowers; foods; fruits; hardness; mechanical properties; oils; physicochemical properties; porosity; processing equipment; protein content; quality control; seeds; surface area; water content
Abstract:
... Madhuca longifolia, commonly known as mahua, is an important crop due to its industrial uses and applications of its flower, fruit and seed. The characterisation of mahua seeds is essential for its further processing as well as for the design of post-harvest equipment. Therefore, the aim of the study was to characterise the mahua seed in terms of its physical, mechanical and chemical properties. T ...
DOI:
10.3920/QAS2017.1075

14. Characteristics of Microcrystalline Cellulose from Coir Fibers

Author:
Joyline Gichuki; Patrick Gachoki Kareru; Anthony Ngure Gachanja; Catherine Ngamau
Source:
Journal of natural fibers 2022 v.19 no.3 pp. 915-930
ISSN:
1544-046X
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; angle of repose; bulk density; cellulose; coir; compressibility; crystal structure; glass transition; hemicellulose; lignin; paper; peracetic acid; sodium hydroxide; temperature; thermogravimetry
Abstract:
... This work aimed to extract and characterize microcrystalline cellulose from coir fibers. Extraction was achieved in a two-step process in which the coir fibers were treated with sodium hydroxide for 3 h at 100°C followed by bleaching with peracetic acid to remove residual lignin and hemicellulose. The microcrystalline cellulose powder characteristics such as the bulk density, tapped density, angle ...
DOI:
10.1080/15440478.2020.1764441

15. Characterization of stipe and cap powders of mushroom (Lentinus edodes) prepared by different grinding methods

Author:
Zipei Zhang; Huige Song; Zhen Peng; Qingnan Luo; Jian Ming; Guahua Zhao
Source:
Journal of food engineering 2012 v.109 no.3 pp. 406-413
ISSN:
0260-8774
Subject:
Lentinula edodes; angle of repose; bulk density; dietary protein; grinding; milling; mushrooms; nutritive value; particle size; particle size distribution; physicochemical properties; powders; soluble fiber; surface area
Abstract:
... The effects of micronization methods, mechanical and jet millings, on the physico-chemical properties of mushroom (Lentinus edodes) powder were investigated in contrast to shear pulverization. The powders of dried mushroom cap and stipe were prepared to obtain six powders. Compared to shear pulverization, mechanical and jet millings effectively reduced particle size and brought about a narrow and ...
DOI:
10.1016/j.jfoodeng.2011.11.007

16. Characterization of the flowability of fly ashes from grate-fired combustion of forest residues

Author:
Christof Lanzerstorfer
Source:
Fuel processing technology 2016 v.150 pp. 10-15
ISSN:
0378-3820
Subject:
angle of repose; bulk density; collectors; combustion; fly ash; friction; particle size; particle size distribution; plant residues; silos
Abstract:
... Data about the flowability of fly ashes are important for the design of hoppers of fly ash collection equipment and fly ash storage silos. Fly ashes from sixteen grate-fired combustion plants (first-stage and second-stage de-dusting fly ash) were examined for flow relevant properties. The flowability category of the coarser first-stage fly ashes was cohesive to easy-flowing, while for the second-s ...
DOI:
10.1016/j.fuproc.2016.05.020

17. Class-based physical properties of air-classified sunflower seeds and kernels

Author:
Simon Munder; Dimitrios Argyropoulos; Joachim Müller
Source:
Biosystems engineering 2017 v.164 pp. 124-134
ISSN:
1537-5110
Subject:
air; angle of repose; bulk density; friction; lipid content; oleic acid; porosity; postharvest treatment; seed weight; seeds; sunflower seed
Abstract:
... High oleic sunflower seeds, with higher oil content and greater oleic acid content than other sunflower seeds, are gaining in economic importance. However, there are still major gaps in knowledge concerning their post-harvest handling. This study was carried out, to establish a simply implemented method of classifying the seeds via air-separation, which allows rapid and precise assignment of high ...
DOI:
10.1016/j.biosystemseng.2017.10.005

18. Comparative analysis of new Persian walnut cultivars: nut/kernel geometrical, gravimetrical, frictional and mechanical attributes and kernel chemical composition

Author:
Seyed Mohammad Taghi Gharibzahedi; Seyed Mohammad Mousavi; Manouchehr Hamedi; Faramarz Khodaiyan
Source:
Scientia horticulturae 2012 v.135 no. pp. 202-209
ISSN:
0304-4238
Subject:
angle of repose; bulk density; carbohydrate content; chemical analysis; chemical engineering; cultivars; energy; glass; lipid content; plywood; protein value; seeds; steel; surface area; walnuts; water content
Abstract:
... This study compared some chemical and engineering attributes of three Persian walnut cultivars (Toyserkan, Chaboksar and Karaj) at a moisture content of 3.41% (d.b.). The study experimentally investigated engineering properties of the nut and kernel of walnuts, such as dimensions, the geometric mean diameter, surface area, sphericity, bulk and true densities, porosity, dynamic angle of repose, and ...
DOI:
10.1016/j.scienta.2011.11.030

19. Comparison of some engineering properties of rapeseed cultivars

Author:
Unal, Halil; Sincik, Mehmet; Izli, Nazmi
Source:
Industrial crops and products 2009 v.30 no.1 pp. 131-136
ISSN:
0926-6690
Subject:
cultivars; angle of repose; mathematical models; surface area; porosity; plant characteristics; bulk density; friction; Brassica napus var. napus; rapeseed; dimensions; Turkey (country)
Abstract:
... Several engineering properties of three rapeseed cultivars (Capitol, Jetneuf and Samurai), newly planted cultivars in Turkey, were determined and compared. These properties are necessary for the design of equipments for harvesting, processing, transporting, sorting, separating and packing. Some engineering characteristics such as: average length, diameter, the geometric mean diameter, surface area ...
DOI:
10.1016/j.indcrop.2009.02.011

20. Computer Model for Predicting the Packing Factors of Whole Grains in Flat Storage Structures

Author:
S. A. Thompson; S. G. McNeill; I. J. Ross; T. C. Bridges
Source:
Applied engineering in agriculture 1990 v.6 no.4 pp. 465-470
ISSN:
0883-8542
Subject:
agricultural engineering; angle of repose; bulk density; computer simulation; computer software; prediction; water content; whole grain foods
Abstract:
... A "user friendly" computer program has been developed to estimate the packing of whole grains in flat storage structures and round temporary piles of variable dimensions. The program utilizes the concept of geostatic stresses to predict the variation in bulk density of the stored material. The capacity of the storage structure is estimated in standard bushels based on the dimensions of the grain m ...
DOI:
10.13031/2013.26415