Recent content by sashankhrao

Thank you for your reply. So if the vapor pressure reaches the surrounding atmospheric pressure, how does that lead to the pressure around the volume of water being lower than the pressure with which the steam wants to form? By "wants", do you mean that the molecules break away from...

I am trying to understand the concept of boiling from a very fundamental perspective. Most textbooks say that: as a liquid is heated, it's vapor pressure increases. When the vapor pressure reaches the surrounding pressure(or atmospheric pressure at that point), then boiling occurs. I agree...

I am trying to understand the concept of boiling from a very fundamental perspective. Most textbooks say that: as a liquid is heated, it's vapor pressure increases. When the vapor pressure reaches the surrounding pressure(or atmospheric pressure at that point), then boiling occurs. I agree...

Hi, I am trying the solve the Poisson equation in a domain with curved boundaries using the Finite Difference Method (second order accurate). I need to apply the Neumann condition on the curved boundary. I have used bilinear interpolation to do this but this causes the resultant scheme to be...

Hi, I am trying the solve the Poisson equation in a domain with curved boundaries using the Finite Difference Method (second order accurate). I need to apply the neumann condition on the curved boundary. I have used bilinear interpolation to do this but this causes the resultant scheme to be...

Hi, I think there seems to be some confusion.Pls take a look at this http://ojas.ucok.edu/96/T96/Jdavis.htm#Abs . I'm talking about the ends of the wings (wingtips). The second option in the link seems to be better than the third. However it is not used in any commercial airline.

Wingtips Hi, If I need to design a wingtip for an exisitng wing then what size must the wingtip be relative to the wing. If someone can help out by providing links or any info, I will really appreciate it!

Hi, Can someone pls help me out in telling me whether the drooped down wingtip or the drooped up wingtip is better for an RC plane? I have read that the drooped down wingtip is better but none of the planes in production(commercial airliners) use it. They use the drooped up wingtip! Also, is...

Hi, Thank you very much for your reply. The wing span of our craft is 2.5m just for your reference. The tail is like the one from the avro lancaster. Would winglets be useful for the main wing for our model? I understand that winglets reduce the downwash and hence reduce induced drag. I’m...

Hi, I need to make changes to an existing design of a model radio controlled aircraft to increase its lift to carry more payload. Pls confirm my ideas and any suggesstions would be really appreciated. Using wingtips to reduce induced drag and increase lift. Will a Dihedral affect lift in...

Hi, Thanks again for your help. I will begin my coding with Fortran. Regards, Sashankh

Can someone pls advise me as to which would be the better software to learn which would help in CFD - Fortran or C or something else? Thanks!

Hi, Sorry for the late reply. Thanks a lot for answering my question. I'll take your advice of using impirical relations. Sashankh

Hi, I am trying to do a cross flow analysis in FLUENT. Air and water in a cross flow heat exchanger. The fluids do not come in contact. I have modeled and meshed the geometry in GAMBIT. Could someone pls help me with the steps in FLUENT as to how to assign different fluid properties for...

Hi Andy, Thank you for your interest in my doubt. If you could assist me with your email address i could send you the document that i am trying to understand. Its on Vortex Breakdown. A pdf file.