A review of the characteristics of tornadic wind fields through observations and simulations

Honerkamp, Ryan; Yan, Guirong Grace; Snyder, Jeffrey C.

doi:10.1016/j.jweia.2020.104195

“…Basically, CFD simulates fluid systems using mathematical modeling of the physical problem and numerical methods that can be solved using a computer (Zuo 2020). The progress of modeling of tornadoes numerically has been discussed comprehensively by Church et al (1993), andHonerkamp, Yan andSnyder (2020). It is worth noting that, despite the capabilities of CFD, most of the numerical tornado simulations were conducted to validate the tornadic wind flow generated in physical simulators, with little focus on civil engineering applications (Honerkamp, Yan and Snyder 2020).…”

Section: Characterization Of Tornado Vorticesmentioning

confidence: 99%

“…The progress of modeling of tornadoes numerically has been discussed comprehensively by Church et al (1993), andHonerkamp, Yan andSnyder (2020). It is worth noting that, despite the capabilities of CFD, most of the numerical tornado simulations were conducted to validate the tornadic wind flow generated in physical simulators, with little focus on civil engineering applications (Honerkamp, Yan and Snyder 2020). This could be attributed to the high level of complexity involved in accurately representing this complicated physical phenomenon.…”

Section: Characterization Of Tornado Vorticesmentioning

confidence: 99%

“…A similar study was conducted by Kuai et al (2008) that also focused on parameter sensitivity studies of their physical simulator. The progress in numerical tornado simulation has been discussed in depth by Church et al (1993), andHonerkamp, Yan andSnyder (2020). Furthermore, there are other several studies where CFD was used to model tornadoes including Natarjan and Hangan (2009), Gorecki and Selvam (2014), and Li et al…”

Section: Introductionmentioning

confidence: 99%

“…(2020). However, it is important to note that most of numerical tornado simulations were conducted to validate tornadic wind flow generated by physical simulations, and not as much in other areas such as civil and structural applications (Honerkamp, Yan and Snyder 2020).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Developing a Wide-Angle Velocity Probe for Characterizing Tornado Wind Field

Elgamal¹

2023

Preprint

0

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<p>This study focuses on designing and calibrating a proof-of-concept low-cost velocity probe capable of characterizing complex turbulent flow fields, such as tornadic vortices, acting at a wide range of angles of attack. In the first part of the study, a spherical probe was 3D printed and instrumented in-house. The probe was designed with 16 holes allowing for 140° range of measurement. Experimental tests were conducted in Ryerson University Wind Tunnel. A mathematical model was developed to account for different angles of attack, including flow impingement between the holes. The probe could predict mean velocities, flow direction and turbulence intensities with average errors of 8%, 9° and 0.6% respectively. In the second part, a revision to the probe design was applied by considering a chamfered version with 16 polyhedral faces. The revised probe was investigated using Computation Fluid Dynamics (CFD) employing Large Eddy Simulation (LES) modeling. The revised probe showed an overall 50% increase in the accuracy compared with the spherical shape, which brought probe accuracy to the acceptable levels suitable for wind engineering applications.</p>

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“…Basically, CFD simulates fluid systems using mathematical modeling of the physical problem and numerical methods that can be solved using a computer (Zuo 2020). The progress of modeling of tornadoes numerically has been discussed comprehensively by Church et al (1993), andHonerkamp, Yan andSnyder (2020). It is worth noting that, despite the capabilities of CFD, most of the numerical tornado simulations were conducted to validate the tornadic wind flow generated in physical simulators, with little focus on civil engineering applications (Honerkamp, Yan and Snyder 2020).…”

Section: Characterization Of Tornado Vorticesmentioning

confidence: 99%

Developing a Wide-Angle Velocity Probe for Characterizing Tornado Wind Field

Elgamal¹

2023

Preprint

0

View full text Add to dashboard Cite

<p>This study focuses on designing and calibrating a proof-of-concept low-cost velocity probe capable of characterizing complex turbulent flow fields, such as tornadic vortices, acting at a wide range of angles of attack. In the first part of the study, a spherical probe was 3D printed and instrumented in-house. The probe was designed with 16 holes allowing for 140° range of measurement. Experimental tests were conducted in Ryerson University Wind Tunnel. A mathematical model was developed to account for different angles of attack, including flow impingement between the holes. The probe could predict mean velocities, flow direction and turbulence intensities with average errors of 8%, 9° and 0.6% respectively. In the second part, a revision to the probe design was applied by considering a chamfered version with 16 polyhedral faces. The revised probe was investigated using Computation Fluid Dynamics (CFD) employing Large Eddy Simulation (LES) modeling. The revised probe showed an overall 50% increase in the accuracy compared with the spherical shape, which brought probe accuracy to the acceptable levels suitable for wind engineering applications.</p>

show abstract