By David Soper
ISBN-10: 3319332775
ISBN-13: 9783319332772
ISBN-10: 3319332791
ISBN-13: 9783319332796
This notable thesis characterises the aerodynamic movement round a box freight educate; investigating how altering box loading configurations have an effect on the value of aerodynamic forces measured on a box. 1/25th scale moving-model freight teach experiments have been conducted on the collage of Birmingham’s educate rig facility to enquire slipstream velocities and static strain, in addition to measuring, utilizing a particularly designed on-board strain tracking approach, the aerodynamic rather a lot on packing containers. effects have been in comparison with complete scale info and assessed in phrases ecu criteria for trackside employee and passenger safeguard limits.
Rail motor vehicle aerodynamic stories have tended to formerly concentrate on excessive pace passenger trains according to raises in teach pace. The examine offered inside this thesis highlights the problems linked to the aerodynamic improvement round a freight teach, delivering the principles for extra learn and a foundation from which to boost foreign protection criteria relating to freight, in addition to excessive pace trains.
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Additional info for The Aerodynamics of a Container Freight Train
Example text
Sanz-Andrés et al. (2003) developed the assumption that flow can be considered as inviscid in the nose region to present an analytical solution for velocity around the vehicle nose using potential flow theory. 3) where x, y and z are distances in the longitudinal, lateral and vertical direction respectively. Vtrain is the train speed and Aref is the vehicle cross-sectional area. Similarly the static pressure coefficient in the nose region can be defined as (SanzAndrés et al. 5ρUres horizontal x-y plane.
25 m freight train and at full scale. a Bias limit. b Random uncertainty. c Total uncertainty . . . . . . . . 25 m freight train and at full scale. a Bias limit. b Random uncertainty. c Total uncertainty . . . . . . . . The bias limit, random uncertainties and total uncertainties for consist 1 in the open air and crosswind test sections. a Bias limit open air section. b Bias limit crosswind section. c Random uncertainty open air section. d Random uncertainty crosswind section.
Standard deviation analysis results for original data set σ cN and the bootstrap method σ BS cN . Analysis is undertaken for pressure taps in consist 1 loops 1 and 2. a Loop 1 original data. b Loop 1 bootstrap data. c Loop 2 original data. d Loop 2 bootstrap data . . Standard deviation analysis results for original data set σ cN and the bootstrap method σ BS cN for the full and model scale nose region data for U and Cp . a Full and model scale original data. b Full and model scale bootstrap data .
The Aerodynamics of a Container Freight Train by David Soper
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