1) Find an expression for the mass flux in the venturi tube (shown below) as a function of the pressure change. Pi P₂

(1) Given the working form of the Bernoulli equation as v2 + gz + dW - F dm Where s is the friction heating per unit mass dQ F = Au dm Given also that friction heating in laminar flow of Newtonian fluids in circular pipes is given as -AP F = = -gAz = Q Ax µ 128 Ax is change in the x-direction. A typical capillary viscometer has a large-diameter reservoir and a long, small diameter, vertical tube. The sample is placed in the reservoir and the flow rate due to gravity is measured. The tube is 0.1 m long and has a 1 mm ID. The height of the fluid in the reservoir above the inlet to the tube is 0.02 m. The fluid being tested has a density of 1050 kg / m'. The flow rate is 10* m³ / s. What is the viscosity of the fluid? Typical capillary viscometer

B/A boiling channel receives a thermal power of 6000 kw. If subcooled water at 275 °C enters the channel at a flow rate of 15 kg/s what is the void fraction at the channel outlet where the slip ratio is 1.687 and pressure is 68 bar. Given data: At 68 bar: h=1256 KJ/Kg, hg-1518 KJ/Kg, V-1.344*10-³ m³/Kg, V-28.27*10³ m³/Kg

A flow of water at 1 atm with a vapor pressure of 0.2 psi and a critical cavitation number of 0.3 (Ca critical = Patm-Pvap / 0.5pV2). At what rate does cavitation occur?