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MTW Exercise 22.7 -- Calculate the law of local energy conservation for a viscous fluid with heat flow
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[QUOTE="TerryW, post: 6471032, member: 119371"] Hi Etotheipi, Thanks for getting back to me on this. I'll spend a bit of time comparing your working with mine to see if it generates any further ideas I hadn't thought of doing this, I just took ##\partial_{\mu} (nu^{\mu}) = 0 ## I know that the Lorentz frame was used earlier to help arrive at a solution but I wonder if it can help here as reducing ##u \cdot \nabla \cdot T## to the Lorentz frame produces a quite simple equation which doesn't look like it will help me get anywhere. I tried working back starting with ##\sigma_{\alpha \beta} \sigma ^{\alpha \beta}## but that didn't produce anything that looked useful. I had a chat with my son last night. He read Astrophysics at King's and knew John Stewart. His main comment was the John Stewart was infamous for setting impossible exam questions! I'll post again if I make any further progress.RegardsTerryW [/QUOTE]
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MTW Exercise 22.7 -- Calculate the law of local energy conservation for a viscous fluid with heat flow
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