What is the characteristics of the flow in Hot-water rockets

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The discussion centers on the creation of a Hot-Water Rocket, emphasizing the need for thermodynamics calculations related to flow dynamics. Participants agree that the flow in such systems will be unsteady, but there is uncertainty about whether it is uniform. There is a request for resources on unsteady energy-mass flow problems, as most available materials focus on steady flow. Clarification is sought regarding the definition of a "hot water rocket." The conversation highlights the importance of understanding flow characteristics for effective design and operation.
Basimalasi
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So I'm trying to make a Hot-Water Rocket. But I want to make the necessary thermodynamics calculations first.
What kind of flow will it be in such systems

I think it's obviously going to be an unsteady flow but is it uniform or not?

I also would love if you guys linked me to unsteady energy-mass flow of water problems. I tried google and my thermodynamics book but 99% of the problems are in steady flow.
Thanks in advance.
 
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What exactly do you mean by a "hot water rocket"?
 

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