Question

A steady, two-dimensional velocity field is given by V with rightwards arrow on top=(u,v)=(3.69-0.7x)i with rightwards arrow on top+(2.16+3.06y)j with rightwards arrow on top where the x- and y-coordinates are in meters and the magnitude of velocity is in m/s. The volumetric strain rate in s−1 is

A bird is flying in a room with a velocity field of (u, v, w)=0.58x+0.22t–1.22 (m/s). The room is heated by a heat pump so that the temperature distribution at steady state is T(x, y, z) = 400 – 0.29y –0.6z – 0.2(5 – x2) (°C)? The rate of temperature change in °C/s that the bird feels after 3 seconds of flight, as it flies through x = 1 m is

Answer 1