Method of Improvement of Air Flow Uniformity to Reduce the Evaporator Frosting of a Passenger Car

2021 ◽  
Author(s):  
ANIT SEN ◽  
SOMNATH SEN ◽  
Paulson Parayil ◽  
Arunkumar Goel
Keyword(s):  
Air Flow ◽  
Flow Uniformity ◽  
Passenger Car

Experimental and numerical study on air flow uniformity in the isobaric windbox of a 600 MW supercritical CFB boiler

2017 ◽  
Vol 122 ◽  
pp. 311-321 ◽  
Author(s):  
Jin Yan ◽  
Xiaofeng Lu ◽  
Quanhai Wang ◽  
Yinhu Kang ◽  
Jianbo Li ◽  
...  
Keyword(s):  
Numerical Study ◽  
Air Flow ◽  
Flow Uniformity ◽  
Cfb Boiler

A CFD study on improving air flow uniformity in indoor plant factory system

2016 ◽  
Vol 147 ◽  
pp. 193-205 ◽  
Author(s):  
Ying Zhang ◽  
Murat Kacira ◽  
Lingling An
Keyword(s):  
Air Flow ◽  
Flow Uniformity ◽  
Plant Factory

Effects of Air Induct Structure to Flow Uniformity and Resistance for Primary Surface Recuperator of a Micro Gas Turbine

2010 ◽  
Author(s):  
Wei Qu ◽  
Shan Gao
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Pressure Loss ◽  
Air Flow ◽  
Flow Distribution ◽  
Structure Design ◽  
Flow Uniformity ◽  
Local Pressure ◽  
Pressure Losses ◽  
Micro Gas Turbine

Primary surface recuperator is important for micro gas turbines, the flow distribution and pressure loss are sensitive to the induct structure design significantly. The air induct structure for one recuperator is modelled and simulated. Several flow fields and pressure losses are obtained for different designs of air induct structure. The air induct structure can affect the flow uniformity, further influence the pressure loss a lot. For several changes of air induct structure, the non-distribution of air flow can be decreased from 67% to 13%, and the pressure loss can be decreased to 50% of the original. Considering the recuperator design and the gas turbine, one optimized structure is recommended, which has less local pressure loss and better flow distribution.

Numerical analysis of air-flow and temperature field in a passenger car compartment

2012 ◽  
Author(s):  
Haslinda Mohamed Kamar ◽  
Nazri Kamsah ◽  
Ahmad Miski Mohammad Nor
Keyword(s):  
Temperature Field ◽  
Numerical Analysis ◽  
Air Flow ◽  
Passenger Car

The Effect of Using the Flow Separator Blade to Increase the Uniformity of Flow in the Intake Manifold

2019 ◽  
Vol 35 (6) ◽  
pp. 875-885
Author(s):  
M. Nazemi Babadi ◽  
S. Kheradmand
Keyword(s):  
Numerical Simulations ◽  
Uniform Distribution ◽  
Air Flow ◽  
Engine Performance ◽  
Uniform Flow ◽  
Volumetric Efficiency ◽  
Intake Manifold ◽  
Flow Uniformity ◽  
Guide Blade ◽  
Flow Guide

ABSTRACTIn this paper, an idea to make the flow uniform inside the manifolds of four and six cylinder engines without changing their main geometries is presented. In general the uniform distribution of air flow among the engine cylinders is very important. Non-uniform flow in the intake manifold outlets causes inadequate feeding of the cylinders, inappropriate combustion and reduces engine volumetric efficiency. So this matter is vital for improving engine performance. A flow guide blade is added into the manifold and uniformity of the air flow is studied in different regime using transient numerical simulations. The amount of air exited from each outlet and the effect of this blade on flow uniformity is investigated. The results showed that the blade has made the flow more uniform in the manifold outlets and it was also found that in the four-cylinder and six-cylinder engines the flow uniformity is increased by 67% and 75%, respectively. In other words, as the number of engine cylinders increase, the effect of using this blade increases.

Investigation of Aerodynamic Wheel Designs on a Passenger Car at Different Cooling Air Flow Conditions

2011 ◽  
Author(s):  
Christoffer Landstro¨m ◽  
Lennart Lo¨fdahl
Keyword(s):  
Drag Reduction ◽  
Aerodynamic Drag ◽  
Air Flow ◽  
Flow Structures ◽  
Sustainable Mobility ◽  
Passenger Cars ◽  
Passenger Car ◽  
Flow Configurations ◽  
Cooling Air Flow ◽  
Cooling Air

Passenger cars represent the largest part of all means of personal transportation today. Thus, it is important to work towards reduced energy consumption of cars if a sustainable mobility is to be achieved. This involves many aspects of vehicle engineering; one of them being aerodynamics. This study focuses on aerodynamic drag and the contributions from the wheels at different cooling air flow configurations. Wheels and wheel housings are important for the overall aerodynamic drag on passenger cars. It has been shown that as much as 25% of the aerodynamic drag originates from these components. Therefore, it is desirable to understand the flow structures related to the wheels and wheel housings, and how they interact with other important flow regions. This paper presents an investigation of the effects of wheel designs on aerodynamic drag at different cooling air flow configurations on a sedan type passenger car. Comparisons between numerical simulations and wind tunnel measurements are made for some of the configurations as well. Several additional wheel configurations were investigated numerically to further investigate the flow structures at the front and rear wheels. The numerical results show that the effects of radial wheel covering varied noticeably with cooling air flow configuration. In two of the configurations this resulted in a net drag increase with closed cooling air inlets. The best configuration with closed cooling air inlets generated an overall drag reduction of 29 drag counts compared with the numerical baseline with open cooling air inlets. In addition to the obvious drag reduction of closing the cooling air inlets, the main reasons for the additional decrease was limiting the drag increase at the front stagnation region and positive interference effects along the underbody and vehicle base.

Sign in / Sign up

Export Citation Format

Share Document