Engineering Physics Round Duct Heat Transfer Coefficient and Wall Temperature Equation and Calculator Equation and calculator heat transfer coefficient for fully developed flow in a smooth circular tube. The convection calculation automatically switches between laminar and turbulent convection correlations based ...
What can this calculator be used for?helical antenna The calculator returns values for the axial propagation factor β and characteristic impedance Zc of the n = 0 (T0) sheath helix waveguide mode for any helix dimensions at any frequency. ...
Re = DhV / ( 720 v ) For standard air and temperature between 40 and 100°F, Re can be calculated by Eq. 3 Re = 8.50 Dhv Eq. 4 Dh= 4 A / P Where: ε=material absolute roughness factor, ft Dh= hydraulic diameter, in A = duct area, in2 P = preimeter of cross section, i...