Mechanical Engineering - Hydraulics and Fluid Mechanics - Discussion
Discussion Forum : Hydraulics and Fluid Mechanics - Section 1 (Q.No. 2)
2.
The value of bulk modulus of a fluid is required to determine
Discussion:
44 comments Page 3 of 5.
Shek said:
1 decade ago
Definition of match number?
Radha Choudhary said:
10 years ago
The Mach Number is a dimensionless value useful for analyzing fluid flow dynamics problems where compressibility is a significant factor. (You can also read as-if we compare sound velocity to other velocity then it's called of mach number).
The Mach Number can be expressed as.
M = v/c (1).
Where,
M = Mach number.
v = Fluid flow speed (m/s, ft/s).
c = Speed of sound (m/s, ft/s).
The Mach Number can be expressed as.
M = v/c (1).
Where,
M = Mach number.
v = Fluid flow speed (m/s, ft/s).
c = Speed of sound (m/s, ft/s).
Mihir said:
10 years ago
v = (k/density)^0.5.
Mach no = v/c.
So k is required to find Mach no.
Mach no = v/c.
So k is required to find Mach no.
Rahul kumar said:
9 years ago
Mach number = v/c.
c = sqrt(bulk modulus/density).
c = sqrt(bulk modulus/density).
Vennela said:
9 years ago
Is it is supersonic if Mach number is exactly equal to 3 or if mach no is greater than 1.
Vennela said:
9 years ago
Why we need bulk modulus to find the elastic forces?
Vennela said:
9 years ago
Why we need to use this numbers, and what is Knudsen number?
SEKHAR said:
9 years ago
Mach number is the ratio of the speed of flow to the speed of sound. Where the speed of flow depends on bulk modulus.
Mach number is a dimensionless quantity.
Mach number is a dimensionless quantity.
Dad said:
9 years ago
@Vennela.
Knudsen number = Free length/characteristic length.
Knudsen number = Free length/characteristic length.
Somesh Garai said:
9 years ago
Alternatively, the Mach Number can be expressed with the density and the bulk modulus for elasticity as,
M = v (ρ/ E)1/2.
Where,
ρ = density of fluid (kg/m^3, lb/ft^3).
E = bulk modulus elasticity (N/m^2 (Pa), lbf/in^2 (psi)).
The bulk modulus elasticity has the dimension pressure and is commonly used to characterize the fluid compressibility.
M = v (ρ/ E)1/2.
Where,
ρ = density of fluid (kg/m^3, lb/ft^3).
E = bulk modulus elasticity (N/m^2 (Pa), lbf/in^2 (psi)).
The bulk modulus elasticity has the dimension pressure and is commonly used to characterize the fluid compressibility.
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