Impact of asymmetrical heating on the uncertainty propagation of flow parameters on wall heat transfers in solar receivers

Uncertainties may skew the understanding of experiments or numerical simulations results. The impact flow parameters uncertainties measurement on wall heat flux is investigated in a non-isothermal turbulent channel flow. A transfer correlation dedicated to gas-pressurized solar receivers concentrated tower power used. Both symmetric and asymmetric heating conditions are tested. sensitivity study performed. effects bulk temperatures analyzed large bulk-to-wall temperature ratio range. Guide expression Uncertainty Measurement (GUM) applied provides an analytical uncertainty propagation. Assuming quasi-normality quasi-linearity studied function, this method approximate results obtained following methodology described GUM then compared direct computation with altered temperatures. shows dependence high estimation some variations, highlighting necessity accurate measurements. This particularly salient end region receiver, i.e. when close. produces very satisfying estimations quite conditions. that accuracy devices should be adapted according their location receiver.