P=100 kPa Data 1.2 1.1 1 0.9 0.8 0.7 180 200 220 240 260 280 300 Temperature, K Figure 3. A comparison of the Air Prandtl number calculated by Equation (2) with reported data [6] as a function of pressure and temperature 1.2 1.15 1.1 1.05 1 0.95 0.9 0.85 0.8 0.75 0.7 320 340 P=500 kPa Data P=1000 kPa Data P=2000 kPa Data P=3000 kPa Data P=4000 kPa Data P=5000 kPa Data P=6000 kPa Data P=7000 kPa Data P=8000 kPa Data P=9000 kPa Data P=10000 kPa Data 360 380 400 MSE = 1 n N 1i= ( i of neural network model and corresponding target values will propagate backward via the network and the values of weights and biases will be adjusted so that the error function is minimized. In this article, the mean squared error (MSE), as defined by Equationhttp://www.Chemengonline.Com