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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Dear list,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have set up a flow network and one of my nodes is a boundary wind induced node with the ‘1:1 sheltered roof <10deg’ pressure coefficient set and the wind reduction factor is set to ‘1’.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal> I notice that when I change the reference height of this node, its pressure changes as well. I read in the literature (Clarke,2001 and Hensen Phd Thesis,1991) that the boundary wind induced node pressure is a function of the pressure coefficient set, density, the wind direction and reference wind speed. The reference wind speed is calculated as a function of the free stream wind speed (the one read from the climate file), the height difference and the local terrain roughness. However as I have seen in the flow network menu, the reference wind speed is calculated only if the user assigns a wind profile (power law, logarithmic, LBL). My question is:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>-If the wind reduction factor is set to ‘1’ should the reference height of the boundary wind induced node affect its pressure? <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;mso-fareast-language:EN-GB'>Kind regards,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;mso-fareast-language:EN-GB'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;mso-fareast-language:EN-GB'>-<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;mso-fareast-language:EN-GB'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;mso-fareast-language:EN-GB'>Dimitrios Sfakianakis MEng<br><br><o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>