A comparison of RANS computations and wind tunnel tests for RMS pressures on a high-rise building model
conference paper
Five root-mean-square (RMS) pressure models are used in combination with different
turbulence models to determine whether it is possible to obtain a conservative estimate of
RMS pressures on a high-rise building model from a RANS calculation. When a precursor domain
is used for the generation of inlet profiles the turbulent kinetic energy is severely underestimated
and, as a result, all RMS models are found to be highly non-conservative, irrespective of
the turbulence model which is used. Although the prescription of an ABL profile of the desired
shape at the inlet or the prescription of more appropriate wall functions on the bottom of the
computational domain might lead to more conservative results it is concluded that new models
are needed to enable the calculation of RMS values from RANS calculations for engineering
purposes.
turbulence models to determine whether it is possible to obtain a conservative estimate of
RMS pressures on a high-rise building model from a RANS calculation. When a precursor domain
is used for the generation of inlet profiles the turbulent kinetic energy is severely underestimated
and, as a result, all RMS models are found to be highly non-conservative, irrespective of
the turbulence model which is used. Although the prescription of an ABL profile of the desired
shape at the inlet or the prescription of more appropriate wall functions on the bottom of the
computational domain might lead to more conservative results it is concluded that new models
are needed to enable the calculation of RMS values from RANS calculations for engineering
purposes.
TNO Identifier
467111
Source title
Proceedings of the Seventh International Colloquium on Bluff Body Aerodynamics and Applications (BBAA7) Shanghai, China; September 2-6,2012
Pages
1-10
Files
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