Engineering, 11.02.2020 20:57 chavez0
The temperature of the atmosphere varies with altitude. In the troposphere, which extends to an altitude of 11 km, for example, temperature variation can be approximated by T = T_0 beta z, where T_0 is the temperature at sea level, which can be taken to be 288.15 K, beta = 0.0065 K/m and z is the vertical height (in meters) above sea-level. The variation of pressure with altitude in a fluid can be shown to follow the differential equation: dp/dz = p rho g - Thermodynamics Obtain a relation for the variation of pressure, p, with vertical height, z, in the troposphere: a) by ignoring the variation of the temperature, b) by taking into account the variation of temperature with height. c) An airplane is flying at 9 km above sea level. What is the temperature at this height? Use the expression you found in part (b) to determine the atmospheric pressure and air density at this altitude. Compare these with values you get by using the expression you found in (a). In solving the differential equation you may find this helpful: p = rho R_g T, where R_g is the gas constant, and here it is 287 J/kg. K for air
Answers: 3
Engineering, 04.07.2019 18:20, luisgonz5050
Find the kinematic pressure of 160kpa. for air, r-287 j/ kg k. and hair al viscosity of air at a temperature of 50°c and an absolute (10 points) (b) find the dynamic viscosity of air at 110 °c. sutherland constant for air is 111k
Answers: 3
Engineering, 04.07.2019 19:10, gabigalvis1091
What is the main objective of using reheat rankine cycle?
Answers: 3
Engineering, 04.07.2019 19:20, horsedoggal1234
Consider airflow over a flat plate of length l = 1.5 m under conditions for which transition occurs at le = 0.9 m based on the critical reynolds number, re, e = 5 x 10. evaluating the thermophysical properties of air at 400 k, determine the air velocity. (hint: use the tables to find the properties of air)
Answers: 3
The temperature of the atmosphere varies with altitude. In the troposphere, which extends to an alti...
Computers and Technology, 21.01.2020 20:31