An important parameter in the study of compressible flow is the speed of sound (or the sonic speed), defined as the speed at which an infinitesimally small pressure wave travels through a medium. Speed of sound is given by the formula : Where: c –Â Speed of sound in m/s k – specific heat ratio(1.4) […]
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Density: Density is a measure of the mass per unit volume of a substance. It indicates how much matter is packed into a given space. P – Pressure in kPa R – Gas constant of air ( 0.287 kPa·m^3/kg·K) T – Temperature in Kelvin(K) Specific Gravity: Specific gravity is the ratio of the density of
Density, Specific gravity and mass of air. Read More »
Volume flow rate is to be determined from measurements of volume and time period. Volume flow rate is used to describe the flow of fluids (gases and liquids) in pipes, ducts, and vessels. It’s essential in designing and optimizing systems, such as: Water supply networks HVAC systems Chemical processing plants Oil and gas pipeline The
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We apply Newton’s second law to calculate the weight (force) that corresponds to the known mass and acceleration. The weight of any object is equal to its mass times the local value of gravitational acceleration. For further queries:
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Probelm Statement: Compressed air at 40 ∘C and 145 kPa from a large tank is discharged to ambient atmosphere at 101 kPa, through a convergent nozzle of 10 cm2 exit area,Calculate the mass flow rate through the nozzle when the ambient atmosphere is at (a) 101 kPa, (b) 50 kPa, and (c) 30 kPa. Equations
pressure ratio, mach number, velocity,density,speed of sound,mach number Read More »
Mass of a substance can be calculated with a simple arithmetic operation. The relation between mass, density and volume can be put to use for the same. Density is directly proportional to mass and inversely proportional to volume. Note: Density: Kg/m^3 Mass : Kg Volume : m^3 For further queries:
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Wind turbines can be a great addition to a sustainable lifestyle. Although installation is expensive, they reduce the overall electricity bill. Wind mills are installed in windy areas like coasts, so that they engage and rotate the wings of the wind turbine. This rotating mechanical energy is converted to electrical energy, which is used in
Electric Power generated and it’s monetary value. Read More »
Problem Statement:Helium gas at 250 kPa and 100 ∘C flows through a rectangular duct of cross-section 40 cm × 50 cm, with a velocity of 500 m s−1.Determine the Mach number, stagnation temperature, stagnation pressure, and the mass flow rate. Assume helium to be an ideal gas. Equation 1: Speed Of Sound. Equation 2:Isentropic Relations
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Problem Statement:An aluminum pitot probe is placed in a supersonic air stream of temperature 30 ∘C. If the melting temperature of aluminum is about 660 ∘C, determine the flow velocity at which the probe will begin to melt. Assume air to be an ideal gas. Equation 1:speed of sound Equation 2:isentropic realtion Equation 3:energy Equation
speed of sound, isentropic realtion, energy Equation, velocity, temperature Read More »
