Update fluid.rst

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Cong Wang
2024-03-22 16:07:57 +01:00
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@@ -424,7 +424,7 @@ increasing Reynolds numbers, and a single reference area :math:`A_D` may not be
drag for highly irregular or slender bodies. For example, experimental fits are derived from problems ranging from drag for highly irregular or slender bodies. For example, experimental fits are derived from problems ranging from
falling playing cards :cite:p:`wang2004,andersen2005a,andersen2005b` to particle transport :cite:p:`loth2008, falling playing cards :cite:p:`wang2004,andersen2005a,andersen2005b` to particle transport :cite:p:`loth2008,
bagheri2016`. See screen capture of the bagheri2016`. See screen capture of the
`cards.xml <https://github.com/deepmind/mujoco/blob/main/model/card/cards.xml>`__ model on the right. `cards.xml <https://github.com/deepmind/mujoco/blob/main/model/cards/cards.xml>`__ model on the right.
We derive a formula for :math:`\mathbf{f}_\text{D}` based on two surfaces :math:`A^\text{proj}_\mathbf{v}` and We derive a formula for :math:`\mathbf{f}_\text{D}` based on two surfaces :math:`A^\text{proj}_\mathbf{v}` and
:math:`A_\text{max}`. The first, :math:`A^\text{proj}_\mathbf{v}`, is the cylindrical projection of the body onto a :math:`A_\text{max}`. The first, :math:`A^\text{proj}_\mathbf{v}`, is the cylindrical projection of the body onto a