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ME 341-Fluid Mechanics I Fall 2018 Example Problem #16 Consider a rocket moving straight up in...
1.) The rocket equation in 1 dimension is ert dt dt where u is the exhaust velocity (in the rocket frame) and Fe is the net external force on the rocket Consider a space probe that is traveling through an interstellar cloud (far from any large gravitational masses). The probe experiences a linear drag force FD - -bv. Let us also assume that u is constant and dm/dt =-γ is constant. (a) The probe runs out of fuel when the...
Problem 36 bclow presents a model describing the drag of a fluid medium that is released from rest at time t 0 (same initial conditions). Using Newton's Second Law, you build a model of the form particle moving through a (governing equation (initial velocity) mi mg-F drag '0 (0)(0)a (t) is the particle's position, m is the mass of the particle, g is the acceleration due to gravity, and Fa is the magnitude of the drag force. You account for...
Consider a circular cylinder of radius a whose central axis is stationary. The cylinder is surrounded by a fluid that is moving with a uniform steady velocity Uk far from the cylinder; the cylinder axis is in the z-direction The cylinder is also spinning on its axis with constant angular velocity, Ω2, where x, у and z are the usual Cartesian unit vectors We wish to model this 2D flow using an inviscid approximation. This is achieved by first calculating...
Problem 2. Phase volumes in a time-dependent two-phase continuous flow sys- tem. Consider a two-phase contacting vessel. In this problem, there are two immicscible liquid phases, but there is no solute mass transfer to be considered. Initially, the vessel contains a volume V = 25,000 L (25 m”) continuous phase (I), and no dispersed phase (II). At time zero, steady flows to the tank commence, with qf = 75 m3/hr and qf1 = 11 mº/hr. Flow exits the vessel via...