Simulation Analysis of Air Flow and Turbulence Statistics in a Rib Grit Roughened Duct

<table>Color-coded plots of streamwise mean velocity <svg height="16.15" id="M58" style="vertical-align:-3.13504pt" version="1.1" viewbox="0 0 33.474998 16.15" width="33.474998" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,12.012)"><path d="M360 -163h-62l-192 430v6l192 430h62l-193 -433z" id="x27E8"></path></g><g transform="matrix(.017,-0,0,-.017,7.083,12.012)"><path d="M751 650l-6 -28q-53 -1 -69 -12.5t-24 -38.5q-23 -85 -43 -192l-13 -69q-34 -181 -130 -262q-79 -65 -185 -65t-171 57q-87 77 -54 258l42 232q12 58 0.5 73t-75.5 19l8 28h263l-6 -28q-63 -5 -78 -18t-26 -74l-41 -226q-25 -135 22 -201t139 -66q99 0 161.5 68t91.5 217
l11 57q28 149 28 193q0 28 -19 38t-79 12l6 28h247z" id="x1D448"></path></g>
<g transform="matrix(.012,-0,0,-.012,20.05,16.087)"><path d="M384 0h-275v27q67 5 81.5 18.5t14.5 68.5v385q0 38 -7.5 47.5t-40.5 10.5l-48 2v24q85 15 178 52v-521q0 -55 14.5 -68.5t82.5 -18.5v-27z" id="x31"></path></g>
<g transform="matrix(.017,-0,0,-.017,26.388,12.012)"><path d="M307 267l-192 -430h-62l193 433l-193 433h62l192 -430v-6z" id="x27E9"></path></g>
</svg> (a) and transverse mean velocity <svg height="16.15" id="M59" style="vertical-align:-3.13504pt" version="1.1" viewbox="0 0 33.474998 16.15" width="33.474998" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,12.012)"><path d="M360 -163h-62l-192 430v6l192 430h62l-193 -433z" id="x27E8"></path></g><g transform="matrix(.017,-0,0,-.017,7.083,12.012)"><path d="M751 650l-6 -28q-53 -1 -69 -12.5t-24 -38.5q-23 -85 -43 -192l-13 -69q-34 -181 -130 -262q-79 -65 -185 -65t-171 57q-87 77 -54 258l42 232q12 58 0.5 73t-75.5 19l8 28h263l-6 -28q-63 -5 -78 -18t-26 -74l-41 -226q-25 -135 22 -201t139 -66q99 0 161.5 68t91.5 217
l11 57q28 149 28 193q0 28 -19 38t-79 12l6 28h247z" id="x1D448"></path></g>
<g transform="matrix(.012,-0,0,-.012,20.05,16.087)"><path d="M412 140l28 -9q0 -2 -35 -131h-373v23q112 112 161 170q59 70 92 127t33 115q0 63 -31 98t-86 35q-75 0 -137 -93l-22 20l57 81q55 59 135 59q69 0 118.5 -46.5t49.5 -122.5q0 -62 -29.5 -114t-102.5 -130l-141 -149h186q42 0 58.5 10.5t38.5 56.5z" id="x32"></path></g>
<g transform="matrix(.017,-0,0,-.017,26.388,12.012)"><path d="M307 267l-192 -430h-62l193 433l-193 433h62l192 -430v-6z" id="x27E9"></path></g>
</svg> (b).</table>

The Scientific World Journal

fig6

Figure 6

Figure 6: Simulation Analysis of Air Flow and Turbulence Statistics in a Rib Grit Roughened Duct 