Hi All,
I'm looking at the fundamental aspects of heat transfer - as I'm not a mechanical/thermal engineer but soon to undergo a project wherein I need to deal with some aspects of thermal engioneering.
In the text, which I've been reading (for finite element analysis), it talks of mass transport wherein the medium of interest is a flowing fluid.
In such a case, heat flows by conduction, convection, and via motion of the
media. The last effect, referred to as mass transport.
My question is 'mass transport' same as forced convection? I guess it is because in forced convection aslo the fluid is in motion and so is in mass transport.
Can anyone throw some light please??
Sahil
Please can anyone hep here?
I've never seen the term "mass transport" used in the context of heat transfer. It sounds like it means convection, and unless the text gives an explicit definition, I would leave it at that.
do you mean 'mass transfer' ?
QUOTE (sahil+Jun 12 2011, 09:31 AM)
Hi All,
I'm looking at the fundamental aspects of heat transfer - as I'm not a mechanical/thermal engineer but soon to undergo a project wherein I need to deal with some aspects of thermal engioneering.
In the text, which I've been reading (for finite element analysis), it talks of mass transport wherein the medium of interest is a flowing fluid.
In such a case, heat flows by conduction, convection, and via motion of the
media. The last effect, referred to as mass transport.
My question is 'mass transport' same as forced convection? I guess it is because in forced convection aslo the fluid is in motion and so is in mass transport.
Can anyone throw some light please??
Sahil
Are you working with reactor flow? I think you're right with the comparison. Convection and diffusion. Like the cat flow in a FCC unit.
Maybe this will help with some basic information.
http://www.timedomaincvd.com/CVD_Fundament...rt/xprtTOC.html
I'm looking at the fundamental aspects of heat transfer - as I'm not a mechanical/thermal engineer but soon to undergo a project wherein I need to deal with some aspects of thermal engioneering.
In the text, which I've been reading (for finite element analysis), it talks of mass transport wherein the medium of interest is a flowing fluid.
In such a case, heat flows by conduction, convection, and via motion of the
media. The last effect, referred to as mass transport.
My question is 'mass transport' same as forced convection? I guess it is because in forced convection aslo the fluid is in motion and so is in mass transport.
Can anyone throw some light please??
Sahil
Are you working with reactor flow? I think you're right with the comparison. Convection and diffusion. Like the cat flow in a FCC unit.
Maybe this will help with some basic information.
http://www.timedomaincvd.com/CVD_Fundament...rt/xprtTOC.html
QUOTE (bar_room_physist+Jun 14 2011, 12:25 AM)
do you mean 'mass transfer' ?
Mass transport is probably the same thing. In a fluid catalytic cracker the fluid is heavy gas oil in gas phase mass transporting [mixing with and pushing] a catalyst feeding a reaction space. Controls are something like 'catalyst flow' to 'feed flow' ratio, velocity, temperature, and pressure. Something like that. You want to get the design mass transport to feed flow so the mixing results in optimum conversion rate to gasoline. Something like that
Mass transport is probably the same thing. In a fluid catalytic cracker the fluid is heavy gas oil in gas phase mass transporting [mixing with and pushing] a catalyst feeding a reaction space. Controls are something like 'catalyst flow' to 'feed flow' ratio, velocity, temperature, and pressure. Something like that. You want to get the design mass transport to feed flow so the mixing results in optimum conversion rate to gasoline. Something like that
PhysOrg scientific forums are totally dedicated to science, physics, and technology. Besides topical forums such as nanotechnology, quantum physics, silicon and III-V technology, applied physics, materials, space and others, you can also join our news and publications discussions. We also provide an off-topic forum category. If you need specific help on a scientific problem or have a question related to physics or technology, visit the PhysOrg Forums. Here you’ll find experts from various fields online every day.
To quit out of "lo-fi" mode and return to the regular forums, please click here.