Relationship of discharge and minor loss coefficient

In summary, the relationship between discharge and minor loss coefficient is an inverse one, meaning that as discharge increases, the minor loss coefficient decreases. This is also related to pressure drop, as a higher minor loss coefficient results in a greater pressure drop. The minor loss coefficient is affected by factors such as pipe geometry, fluid velocity, and type of fluid, and is typically calculated using empirical formulas or experimental data. This relationship is significant in the design and analysis of piping systems, allowing engineers to make informed decisions to minimize energy losses and maintain desired flow rates.
  • #1
mg-eng
2
0
What is relationship between discharge coefficient and minor loss coefficient. Am I right with that equations?
Mechanika_p_yn_w.png

hl – minor head loss
k – minor loss coefficient
ρ – air density
A – pipe cross section area
Cd – discharge coefficient
Δp – pressure drop
u – air velocity
m – mass flow

here is written that it is true:
https://neutrium.net/fluid_flow/discharge-coefficient-for-nozzles-and-orifices/
https://en.wikipedia.org/wiki/Discharge_coefficient

but what with case when k <= 1 ?
 
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  • #2
is that question too difficult?
 

FAQ: Relationship of discharge and minor loss coefficient

1. What is the relationship between discharge and minor loss coefficient?

The relationship between discharge and minor loss coefficient is an inverse one. This means that as the discharge increases, the minor loss coefficient decreases. In other words, as the flow rate increases, the resistance to flow (represented by the minor loss coefficient) decreases.

2. How is minor loss coefficient related to pressure drop?

The minor loss coefficient is directly related to pressure drop. This means that as the minor loss coefficient increases, the pressure drop also increases. This is because a higher minor loss coefficient indicates a higher resistance to flow, which results in a greater pressure drop.

3. What factors affect the minor loss coefficient?

The minor loss coefficient is affected by several factors, including the geometry of the pipe or fitting, the velocity of the fluid, and the type of fluid being used. Other factors such as pipe roughness, temperature, and viscosity may also have an impact on the minor loss coefficient.

4. How is the minor loss coefficient calculated?

The minor loss coefficient is typically calculated using empirical formulas or experimental data. These formulas take into account the various factors that affect the minor loss coefficient and provide a numerical value that can be used in calculations.

5. What is the significance of the relationship between discharge and minor loss coefficient?

The relationship between discharge and minor loss coefficient is important in the design and analysis of piping systems. By understanding this relationship, engineers can accurately predict pressure drops and select appropriate pipe sizes and fittings to minimize energy losses and maintain desired flow rates.

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