FLUID MECHANICS EXAM 1 REVIEW (2024) || Questions & Answers (Graded A+)

FLUID MECHANICS EXAM 1 REVIEW (2024) || Questions & Answers (Graded A+) FLUID MECHANICS EXAM 1 REVIEW (2024) || Questions & Answers (Graded A+) In a horizontal converging (i.e. getting smaller) pipe with steady flowing inviscid, incompressible fluid in one direction, the velocity must _____ and the pressure must ______ as the fluid moves through the pipe. - ANSWER - increase, decrease T/F: Gradient of pressure is a scalar. - ANSWER - False To arrive at Bernoulli's equation, one must ____ this equation along a ______. - ANSWER - integrate along a streamline Inviscid fluids do not have _____ forces. - ANSWER - frictional Is the finite control volume analysis equation micro or macroscopic? - ANSWER - macroscopic When a fluid is incompressible this means what about its density? - ANSWER - Density is constant and uniform. T/F: Pressure at a point in a fluid at rest or in motion is independent of direction as long as there are no shearing stresses present. - ANSWER - True Equation for total mass from a continuum point of view. - ANSWER - (Integral over V) Rho*dV Why is there a negative sign in front of the force due to pressure term? - ANSWER - Because the force due to pressure is acting ON the surface, i.e. going against the normal vector. Four assumptions of P1-P2 = pg(z2-z1) - ANSWER - V=0 (static fluid) density is constant no friction continuum point of view Units of surface tension - ANSWER - N/m Would toothpaste be considered a fluid? - ANSWER - Yes, because toothpaste deforms continuously when ANY magnitude of shear stress occurs. fluid - ANSWER - a substance that deforms continuously when acted on by a shearing stress of any magntitude