How heat will transfer in fast moving bodies?

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Discussion Overview

The discussion centers on the mechanisms of heat transfer in fast-moving bodies, particularly in the context of relativistic speeds. Participants explore theoretical frameworks and practical implications, referencing both literature and experimental findings.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants reference NASA's technical knowledge regarding heat loading during hypersonic re-entry and the heating of geometries in supersonic flight.
  • One participant suggests that heat transfer occurs similarly in fast-moving bodies as in stationary ones, proposing to solve in the rest frame and then apply Lorentz transformations.
  • Another participant questions the validity of this approach, noting that temperature may be poorly defined in accelerating frames, which complicates the comparison of temperatures and the resulting heat flow.
  • A later reply mentions a recent experiment related to the topic, implying that empirical evidence may exist but does not provide specifics.

Areas of Agreement / Disagreement

Participants express differing views on the nature of heat transfer in fast-moving bodies, with no consensus reached on the validity of the proposed methods or the implications of temperature definitions in accelerating frames.

Contextual Notes

Participants highlight limitations regarding the definitions of temperature in different frames and the complexities involved in comparing temperatures across accelerating frames, which may affect the understanding of heat flow.

pawan kumar
how heat will transfer in fast moving bodies?
 
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pawan kumar wrote:
>
> how heat will transfer in fast moving bodies?[/color]

NASA has extensive technical knowledge of head loading during
hypersonic re-entry. Heating of various geometries of edges in
supersonic flight is in the literature.

--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/lajos.htm#a2
 


pawan kumar <pawan_ctn@yahoo.co.in> wrote:

> how heat will transfer in fast moving bodies?[/color]

Just as in stationary bodies.
Solve in rest frame, then Lorentz transform,

Jan
 
J. J. Lodder said:
pawan kumar <pawan_ctn@yahoo.co.in> wrote:

> how heat will transfer in fast moving bodies?[/color]

Just as in stationary bodies.
Solve in rest frame, then Lorentz transform,

Jan

Is that true? I thought temperature was poorly defined in accelerating frames- or at least comparing temperatures between two accelerating frames was problematic- and so heat flow, which is driven by temparature gradients, would seem to be non-trivial as well.

Wasn't there a recent experiment about this?
 

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