CFD airflow simulation of four simple objects - freelancer needed asap

realdoctorstu · August 14, 2018, 07:13

I am in need of simulating the airflow/drag of four different torpedo-shaped objects, as if they were moving through the air.

The work would involve constructing meshes for four simple cigar-shaped objects based on specifications provided, then run a CFD simulation of airflow so that drag can be analysed and compared.

Hannes_Kiel · August 15, 2018, 03:40

Could you please provide some further information regarding dimensions, velocities, Re, Ma, etc. ?

realdoctorstu · August 15, 2018, 06:21

The project is a public engagement exercise that asks the question: 'how far is it possible to throw a hotdog?' if it is thrown like an American football.

The object for CFD analysis is therefore a hotdog (in bread bun): four different designs will be made (e.g. a bun with a pointy end, a hotdog sausage that is fatter at the front, a bread bun that has fins...) for which a mesh will need to be generated. I would provide photos and measurements of the designs.

The CFD analysis needs to be able to create a visual output that can be used to show how airflow and drag generated by each hotdog differs. I see that such analyses have been performed previously for soccer and American footballs (e.g. https://www.simscale.com/blog/2014/0...n-in-football/ and https://www.resolvedanalytics.com/th...l-aerodynamics ) Results will need to be in a form that allows for some kind of quantitative comparison of drag between designs, and a prediction of which design will fly the furthest in ideal conditions.

I understand that such an application has varying speed and varying moving direction and thus not steady state, although for simplicity's sake a 'wind tunnel'-type steady-state analysis may be appropriate.

bobby342 · August 16, 2018, 17:37

I havce good experience in CFD analysis
You can contact me on my email ID, SO we can discuss about the project.
Sunilkumar.vasamsetti64@gmail.com

bobby342 · August 16, 2018, 17:42

I have good experience in cfd starccm+
You can contact me@ sunilkumar.vasamsetti64@gmail.com

realdoctorstu · August 17, 2018, 05:35

Can you give any examples of previous work please?

bobby342 · August 18, 2018, 09:50

External aerodynamics
Underhood thermal analysis
HVAC Cabin cooling and Panel aiming
HVAC component level analysis
Ducts
HXs (Radiator,condensor,CAC)
Exhaust system
Blower PQ curve generation
Turbines
Compressors etc.,. are the some of the projects I have worked and been working.

hokhay · August 20, 2018, 11:50

I have years of Cfd experiences in automotive and drone simulations

hokhay@gmail.com

Jason

calim_cfd · August 26, 2018, 18:01

A hot dog? really? This gotta be all about marking

Anything more complicated than an effective drag ss subsonic calculation is way too expansive for its purpose... it should be a straightforward weekend task

realdoctorstu · August 28, 2018, 09:24

Hi Calim, If this is something you are interested in doing over a weekend, please drop me a message!

gokulravi.pgt · September 12, 2018, 01:07

Hello, this is Gokul. I can provide you with a good drag estimation for your hot-dog problem using my experience in OpenFoam simulation. Please feel free to contact me here: gokulravi.pgt@gmail.com.

realdoctorstu · September 12, 2018, 05:36

This job has now been given

August 14, 2018, 07:13	CFD airflow simulation of four simple objects - freelancer needed asap	#1
realdoctorstu New Member Stuart Join Date: Aug 2018 Posts: 5 Rep Power: 8	I am in need of simulating the airflow/drag of four different torpedo-shaped objects, as if they were moving through the air. The work would involve constructing meshes for four simple cigar-shaped objects based on specifications provided, then run a CFD simulation of airflow so that drag can be analysed and compared.

August 15, 2018, 03:40		#2
Hannes_Kiel Member Hannes Join Date: Apr 2009 Location: Schleswig, Germany Posts: 38 Rep Power: 17	Could you please provide some further information regarding dimensions, velocities, Re, Ma, etc. ? __________________ FluidEngineeringSolutions

August 26, 2018, 18:01		#9
calim_cfd Senior Member mauricio Join Date: Jun 2011 Posts: 172 Rep Power: 18	A hot dog? really? This gotta be all about marking Anything more complicated than an effective drag ss subsonic calculation is way too expansive for its purpose... it should be a straightforward weekend task novakm likes this. __________________ Best Regards /calim "Elune will grant us the strength"

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August 15, 2018, 06:21		#3
realdoctorstu New Member Stuart Join Date: Aug 2018 Posts: 5 Rep Power: 8	The project is a public engagement exercise that asks the question: 'how far is it possible to throw a hotdog?' if it is thrown like an American football. The object for CFD analysis is therefore a hotdog (in bread bun): four different designs will be made (e.g. a bun with a pointy end, a hotdog sausage that is fatter at the front, a bread bun that has fins...) for which a mesh will need to be generated. I would provide photos and measurements of the designs. The CFD analysis needs to be able to create a visual output that can be used to show how airflow and drag generated by each hotdog differs. I see that such analyses have been performed previously for soccer and American footballs (e.g. https://www.simscale.com/blog/2014/0...n-in-football/ and https://www.resolvedanalytics.com/th...l-aerodynamics ) Results will need to be in a form that allows for some kind of quantitative comparison of drag between designs, and a prediction of which design will fly the furthest in ideal conditions. I understand that such an application has varying speed and varying moving direction and thus not steady state, although for simplicity's sake a 'wind tunnel'-type steady-state analysis may be appropriate.

August 16, 2018, 17:37		#4
bobby342 New Member Bobby Join Date: Aug 2018 Posts: 5 Rep Power: 8	I havce good experience in CFD analysis You can contact me on my email ID, SO we can discuss about the project. Sunilkumar.vasamsetti64@gmail.com

August 16, 2018, 17:42		#5
bobby342 New Member Bobby Join Date: Aug 2018 Posts: 5 Rep Power: 8	I have good experience in cfd starccm+ You can contact me@ sunilkumar.vasamsetti64@gmail.com

August 17, 2018, 05:35		#6
realdoctorstu New Member Stuart Join Date: Aug 2018 Posts: 5 Rep Power: 8	Can you give any examples of previous work please?

August 18, 2018, 09:50		#7
bobby342 New Member Bobby Join Date: Aug 2018 Posts: 5 Rep Power: 8	External aerodynamics Underhood thermal analysis HVAC Cabin cooling and Panel aiming HVAC component level analysis Ducts HXs (Radiator,condensor,CAC) Exhaust system Blower PQ curve generation Turbines Compressors etc.,. are the some of the projects I have worked and been working.

August 20, 2018, 11:50		#8
hokhay Member Join Date: Nov 2014 Posts: 92 Rep Power: 12	I have years of Cfd experiences in automotive and drone simulations hokhay@gmail.com Jason

August 28, 2018, 09:24		#10
realdoctorstu New Member Stuart Join Date: Aug 2018 Posts: 5 Rep Power: 8	Hi Calim, If this is something you are interested in doing over a weekend, please drop me a message!

September 12, 2018, 01:07		#11
gokulravi.pgt New Member Gokul Ravi Join Date: Apr 2018 Posts: 5 Rep Power: 8	Hello, this is Gokul. I can provide you with a good drag estimation for your hot-dog problem using my experience in OpenFoam simulation. Please feel free to contact me here: gokulravi.pgt@gmail.com.

September 12, 2018, 05:36		#12
realdoctorstu New Member Stuart Join Date: Aug 2018 Posts: 5 Rep Power: 8	This job has now been given