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You searched for: Author "M. Graba" Remove constraint Author: "M. Graba"
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1. Impact of the acceleration intensity of a passenger car in a road test on energy consumption

Author:
M. Graba,   et al.   ; J. Mamala; A. Bieniek; Z. Sroka;     Show all 4 Authors
Source:
Energy 2021 v.226 pp. 120429
ISSN:
0360-5442
Subject:
automobiles; energy; transmission systems
Abstract:
... The study analyses the effect of acceleration intensity on energy consumption and drive efficiency during a road test for a passenger vehicle. The acceleration was carried out from the assumed initial speed to the target speed determined appropriately for individual gear ratios. The tested speeds include values of 40-130 km/h. The intensity of the acceleration process resulted from the selected se ...
DOI:
10.1016/j.energy.2021.120429

2. Role of Local Flow Conditions in River Biofilm Colonization and Early Growth

Author:
M. Graba,   et al.   ; F. Coundoul; T. Bonometti; S. Sauvage; J.‐M. Sanchez Pérez; F. Y. Moulin;     Show all 6 Authors
Source:
River research and applications 2015 v.31 no.3 pp. 350-367
ISSN:
1535-1459
Subject:
Reynolds number; biofilm; biomass; friction; inoculum; rivers; roughness; shear stress; statistics; topology; viscosity
Abstract:
... Direct numerical simulations of a turbulent boundary layer flow over a bed of hemispheres of height h are performed using an immersed boundary method for comparison with river biofilm growth experiments performed in a hydraulic flume. Flow statistics above the substrates are shown to be in agreement with measurements performed by laser Doppler velocimetry and particle image velocimetry in the expe ...
DOI:
10.1002/rra.2746