TY - JOUR
T1 - Physical simulation of a single-celled tornado-like vortex, Part A
T2 - Flow field characterization
AU - Mishra, Amit R.
AU - James, Darryl L.
AU - Letchford, Chris W.
N1 - Funding Information:
This research was supported by a Texas Higher Education Coordinating Board ARP Grant and the Wind Science and Engineering Research Center of Texas Tech University.
PY - 2008/8
Y1 - 2008/8
N2 - Tornado vortex simulation is described and a new simulator is presented. Radial, tangential, and vertical velocity measurements together with surface static pressure measurements are presented and compared with available data from the Manchester and Spencer, South Dakota tornadoes of May 30, 1998, and June 24, 2003, respectively. Comparisons of the surface pressure profile and tangential velocity decay showed good agreement with the TTU simulation. Analytically, the simulated velocity decay is found to be similar to that of a modified Rankine combined vortex with a variable exponent that changed with height. The simulator is demonstrated as a viable device for determining wind loading on building models in tornado-like vortex flows, and such results are presented in Part B.
AB - Tornado vortex simulation is described and a new simulator is presented. Radial, tangential, and vertical velocity measurements together with surface static pressure measurements are presented and compared with available data from the Manchester and Spencer, South Dakota tornadoes of May 30, 1998, and June 24, 2003, respectively. Comparisons of the surface pressure profile and tangential velocity decay showed good agreement with the TTU simulation. Analytically, the simulated velocity decay is found to be similar to that of a modified Rankine combined vortex with a variable exponent that changed with height. The simulator is demonstrated as a viable device for determining wind loading on building models in tornado-like vortex flows, and such results are presented in Part B.
KW - Modified combined Rankine vortex
KW - Physical tornado simulation
KW - Swirl ratio
KW - Tornado-like vortex
UR - http://www.scopus.com/inward/record.url?scp=44649113889&partnerID=8YFLogxK
U2 - 10.1016/j.jweia.2008.02.063
DO - 10.1016/j.jweia.2008.02.063
M3 - Article
AN - SCOPUS:44649113889
VL - 96
SP - 1243
EP - 1257
JO - Journal of Wind Engineering and Industrial Aerodynamics
JF - Journal of Wind Engineering and Industrial Aerodynamics
SN - 0167-6105
IS - 8-9
ER -