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92 <h1>Aspect Ratio</h1>
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94 <p><img src="../i_blue.jpg" x-maintain-ratio="TRUE" width="30px" height="30px" border="0" class="img_whs1"> The <span style="font-weight: bold;"><B>Aspect Ratio</B></span>
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95 quality criterion for mesh elements is defined as follows:</p>
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99 <ul type="disc" class="whs2">
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101 <li class=kadov-p><p>For a <span style="font-weight: bold;"><B>triangle</B></span>
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102 2D element consisting of 3 nodes a the <span style="font-weight: bold;"><B>Aspect
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103 Ratio</B></span> is calculated as the ratio of the length, h2, of the edge
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104 of this triangle, to the height, h1. The ratio of h2 to h1 is then multiplied
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106 style="vertical-align: Super; font-size: 10pt;"><font size=2 style="font-size:10pt;">(1/2)</font></span> /2, so that
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107 a
\93perfect
\94 element in the shape of an equilateral triangle will be equal
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108 to 1. This procedure is repeated for the remaining two edges of the triangle,
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109 and the largest value is retained as the <span style="font-weight: bold;"><B>Aspect
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110 Ratio</B></span> for the element.</p></li>
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115 <p class="whs3"><img src="../image26.jpg" width="238px" height="205px" border="0" class="img_whs4"></p>
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119 <p class="whs5"> </p>
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121 <ul type="disc" class="whs2">
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123 <li class=kadov-p><p class="whs5">For a <span style="font-weight: bold;"><B>quadrangle</B></span>
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124 2D element consisting of 4 nodes the
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125 <span style="font-weight: bold;"><B>Aspect Ratio </B></span>is the ratio of the
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126 element's longest side to its shortest side.</p></li>
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129 <p class="whs3"><img src="../image22.gif" width="226px" height="70px" border="0" class="img_whs6"></p>
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131 <p class="whs3"> </p>
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133 <p class=TODO>To apply the Aspect Ratio quality criterion to your mesh:</p>
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135 <p class=TODO> </p>
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137 <p class="whs7">1. Display your mesh in the viewer.</p>
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139 <p class="whs7"> </p>
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141 <p class="whs7">2. Choose <span style="font-weight: bold;"><B>Controls
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142 > Aspect Ratio </B></span>or click <img src="../image37.gif" width="25px" height="24px" border="0" class="img_whs8"> button in the toolbar.
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143 Your mesh will be displayed in the viewer with its elements colored according
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144 to the applied mesh quality control criterion:</p>
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146 <p class="whs7"> </p>
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148 <p class="whs7"><img src="../image94.jpg" width="439px" height="313px" border="0" class="img_whs9"></p>
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150 <p class="whs7"> </p>
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152 <p class="whs5"><span style="font-weight: bold;"><B>See Also</B></span>
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153 a sample TUI Script of an <a href="../quality_controls.htm#bookmark8">Aspect
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154 Ratio quality control</a> operation. </p>
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