# Vehicle Aerodynamics and Air Management

Introduction

Understanding of aerodynamic and road loads is very important in establishing acceleration and braking characteristics, stability as well as fuel consumption characteristics of vehicles. More and more semi trailers have started to use diffusers to minimise drag and hence fuel consumption. Therefore, aerodynamic characteristics of such diffusers need to be evaluated very carefully.

Specifications:

It is expected that students will develop a computer model of a semi-trailer of their own choice (without a diffuser) using CAD Package of their own choice. After developing the computer model students are expected to investigate possibility of using a diffuser to reduce drag and hence fuel consumption using CFD package ANSYS.

1) Students are required to analyse the effect of presence of a diffuser on drag force acting on the vehicle. The design velocity should be 55 MPH should act opposite to the direction of motion of the vehicle. Calculate drag force on all faces of the semi-trailer for both with and without cab deflector simulations.

2) Investigate the response of the vehicle if flowing air approaches the vehicle at an angle. Assuming flow velocity to be same, compute drag, lift and side forces acting on the vehicle for flow angles of upto 45 degrees.

Choose minimum two side wind angles on both semi-trailers..

4) Investigate the effect of length of development of flow (take two different upstream lengths 40 x height of the vehicle and 80 x height of the vehicle) on the accuracy of results obtained. This analysis needs to be carried out at 55 MPH with air flow opposite to the semitrailer motion. Only use the model with diffuser.

5) Investigate the effect of width of flow field around the vehicle (Take two different widths, 5 times the width of the vehicle and 20 times width of the vehicle.) on the accuracy of results. This analysis needs to be carried out at 55 MPH with air flow opposite to the semitrailer motion. Only use the model with diffuser.

6) Design, develop and execute validation programme for the simulations carried out. For example, you may use Rapid prototype machine for developing a small scale model of the vehicle. This model could be tested in the wind tunnel. The other option may be to use the data published in the literature. You may validate using analytical methods as well.

7) Based on the investigations above propose an optimal shape of the diffuser. Clearly justify your choice.

The Report

The assignment report must have a formal structure and must include appropriate references (internet references may be included) and appendices. While there is no page limit it is anticipated that the body of the report will not exceed 40 sides of A4 at the maximum.. NB this excludes the title page, summary page and the appendix. The report is to be word processed and in addition to the hard copy, an electronic copy is also to be submitted.

More details in the attached file ...

Please, only professionals with knowledge in this domain are expected to bid. This project can be succesfully completed only by an engineer.

Tentang Majikan:
( 75 ulasan ) Bucharest, Romania

ID Projek: #9968806

## 15 pekerja bebas membida secara purata \$518 untuk pekerjaan ini

erinkennedy

HI, I would like to use my experience to serve you better. You can trust my sincere indulgence both in quality and time frame. If you will give me a chance, I will ensure that you're satisfied. I'm really interested in Lagi

\$250 USD dalam 4 hari
(270 Ulasan)
7.3
alibutt2014

Hi There — I’ve been in the academic writing field for the past 5 years. What’s more! I have taught professional writing for many years at the university level, and I’m obsessed with impeccable grammar and spelling. My Lagi

\$526 USD dalam 10 hari
(167 Ulasan)
7.0
\$526 USD dalam 10 hari
(146 Ulasan)
6.9
\$478 USD dalam 5 hari
(65 Ulasan)
6.0
\$526 USD dalam 10 hari
(63 Ulasan)
5.8
sabirshah4545

We have a team of expert and we can help you in doing your project such as writing, technical writing, Engineering, PCB designing, FPGA, Verilog /VHDL, MATLAB, Mathematics, Calculus, SPSS, Statistic, CUDA, OpenGL, Patt Lagi

\$555 USD dalam 10 hari
(153 Ulasan)
5.9
hrobin

Hello! I am a mechanical engineer and have strong experience with similar projects, i would love to work on it . i checked the doc file , and i am suitable for this project, lets discus it further via chat Thanks Lagi

\$789 USD dalam 10 hari
(3 Ulasan)
5.2
barunmohanty1991

I am an MBA graduate with Aeronautical Engineering background. Do not believe? Here is the proof [login to view URL] Have several years of experience in Academic writing and technical article Lagi

\$277 USD dalam 10 hari
(26 Ulasan)
4.7
Ahmedgamal0

I'm an aerospace engineer. I"m a postgraduate engineer (Master degree). I'm working in flow analysis company. I'm professional user for ANSYS. I can get your job done. BTW my studies are in Aerodynamics field.

\$555 USD dalam 10 hari
(5 Ulasan)
3.9
\$555 USD dalam 10 hari
(13 Ulasan)
3.5
aerorajesh

I have good experience in reporting and CFD simulation. Please check my proposal, and if u have any question. Please let me know. Project Methodology:- Thanks for viewing my proposal, Please have look into my pr Lagi

\$555 USD dalam 30 hari
(2 Ulasan)
3.6
ljayasooriya83

Hello I am a mechanical engineer and now i am doing my M.Sc. As my M.Sc. I am doing a research on developing a model to carry out LES simulations of flow and combustion in IC enginesI have also done a lot of projects u Lagi

\$600 USD dalam 10 hari
(2 Ulasan)
2.4
cfdconsultant

Update2: I know that my project history on freelancer.com is not too much, but in case you need I can explain. By the way, I have just finished one project on freelancer.com, you can have a look at the review. Upda Lagi

\$450 USD dalam 35 hari
(0 Ulasan)
0.0
\$555 USD dalam 15 hari
(0 Ulasan)
0.0
myldrmy

Hi sir, I am mechanical engineer, aircraft designer & aerodynamics expert and I can simulate what you need in CFD. Do you have the vehicle and diffuser design or you want it to designed by me(I am mobile now and I can Lagi

\$420 USD dalam 10 hari
(0 Ulasan)
0.0
MRmechanicss

I have already done a project with wind blade design for turbine also a worked a project in idealized stick skin profile working on outside the freelancer inbox me for more details thank you sir

\$277 USD dalam 10 hari
(0 Ulasan)
0.0
EngArthur7

BEING A PROFESSIONAL & HAVING YEARS OF EXPERIENCE, I DO HIGH QUALITY, TIMELY AND NON-PLAGIARIZED WORK. MY MOTTO IS TO SATISFY ALL MY CLIENTS THUS DELIVER WELL WRITTEN AND DOCUMENTED PAPERS, WRITTEN ACCORDING TO YOUR ST Lagi

\$777 USD dalam 10 hari
(0 Ulasan)
0.0
DhavalAero

Being a Aerospace Engineer, I completely understand the problem statement. I worked in a Wind Industry for 2 years and have experience in such problem simulations on wings. Having masters degree in Simulation Techniqu Lagi

\$555 USD dalam 10 hari
(0 Ulasan)
0.0