# How heat will transfer in fast moving bodies?

• pawan kumar
In summary, the conversation discusses the transfer of heat in fast-moving bodies. NASA has extensive knowledge on the topic, particularly in relation to hypersonic re-entry and supersonic flight. The process of solving for heat transfer in fast-moving bodies is similar to that of stationary bodies, involving solving in the rest frame and then applying a Lorentz transform. However, there may be complications in comparing temperatures between accelerating frames.
pawan kumar
how heat will transfer in fast moving bodies?

pawan kumar wrote:
>
> how heat will transfer in fast moving bodies?

hypersonic re-entry. Heating of various geometries of edges in
supersonic flight is in the literature.

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

> how heat will transfer in fast moving bodies?

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?

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.

## 1. How does heat transfer occur in fast moving bodies?

Heat transfer in fast moving bodies occurs through convection, where heat is transferred through the movement of fluid particles. In the case of fast moving bodies, the fluid particles are typically air or water molecules that move faster due to the body's motion, resulting in a higher rate of heat transfer.

## 2. What factors affect the rate of heat transfer in fast moving bodies?

The rate of heat transfer in fast moving bodies is affected by several factors, including the speed of the body, the surface area of the body, the temperature difference between the body and its surroundings, and the properties of the fluid (such as its density and viscosity).

## 3. How does the shape of a fast moving body affect heat transfer?

The shape of a fast moving body can affect heat transfer by changing the body's surface area and its aerodynamics. A larger surface area allows for more heat to be transferred, while a streamlined shape can reduce the drag and increase the speed of the body, resulting in a higher rate of heat transfer through convection.

## 4. What role does thermal conductivity play in heat transfer for fast moving bodies?

Thermal conductivity, which is a measure of a material's ability to conduct heat, plays a significant role in heat transfer for fast moving bodies. Materials with high thermal conductivity, such as metals, can transfer heat more efficiently compared to materials with low thermal conductivity, such as insulators.

## 5. How does heat transfer in fast moving bodies differ from stationary bodies?

Heat transfer in fast moving bodies differs from stationary bodies primarily due to the increased rate of heat transfer through convection. Additionally, fast moving bodies experience higher levels of friction and drag, which can also impact heat transfer. The shape and size of the body may also play a more significant role in heat transfer for fast moving bodies compared to stationary bodies.

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