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ASR
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Velocity of any flowing vapour reduces as it condenses. Can any of you please suggest the equation to find the reduction in velocity of a vapour as it condense. Thanks in advance.
Consider a mix of vapour and condensate at a fixed temperature. If you follow one molecule it will jump back and forth between phases, but over time it will have the same average KE as the population.ASR said:but the vapour is condensed , therefore there will be change in kinetic energy of molecules
The equation to find the reduction in velocity during condensation is given by:
Δv = (ρl-ρv) / ρl * vv
where Δv is the reduction in velocity, ρl is the density of the liquid, ρv is the density of the vapor, and vv is the velocity of the vapor.
This equation is derived from the conservation of mass and momentum principles in fluid mechanics. It takes into account the change in density and velocity of the vapor as it condenses into a liquid.
Yes, this equation can be used for any type of condensation as long as the appropriate values for density and velocity are used based on the specific conditions of the condensation process.
Yes, there is a simplified version of this equation that is commonly used in engineering calculations. It is given by:
Δv = ρl / ρv * (vv - vl)
where vl is the velocity of the liquid.
The units for the variables in this equation will depend on the system of units being used. However, commonly used units for this equation are kilograms per cubic meter (ρ), meters per second (v), and meters cubed per second squared (Δv).