Bernoulli energy conservation law for compressible flow

 

Air is a compressible fluid which obeys Bernoulli's law, i.e., when gas flows i.e., having speed,

 

its thermal energy can be converted into kinetic energy and vice versa:

 

 

 

 

 

 

 

 

 

                                     

                                         

 

 

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Explanation:

When the gas flows through a convergent nozzle it accelerates, i.e., increase its kinetic energy.

The only source for this increased kinetic energy is the gas's own thermal energy, i.e., the gas become colder.
 

This is how hurricane transforms high-temperature humid air into fast colder wind with clouds and rain

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