Consider laminar, parallel flow past an isothermal flat plate of length /, providing an average heat transfer coefficient of . if the plate is divided into 1 smaller plates, each of length determine an expression for the ratio of the heat transfer coefficient averaged over the 1 plates to the heat transfer coefficient averaged over the single plate, . repeat problem 7.11 for the case when the boundary layer is tripped to a turbulent condition at its leading edge.

Ahot wire operates at a temperature of 200°c while the air temperature is 20°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200°c20°c)/2 = 110°c properties of tungsten: c 0.13 kj/kg.k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m.k