https://glossary.ametsoc.org/w/index.php?title=Drag&feed=atom&action=historyDrag - Revision history2024-03-28T18:23:22ZRevision history for this page on the wikiMediaWiki 1.39.5https://glossary.ametsoc.org/w/index.php?title=Drag&diff=30409&oldid=prevWikiTeq: Rewrite with Template:Term and clean up2024-03-27T20:39:04Z<p>Rewrite with <a href="/wiki/Template:Term" title="Template:Term">Template:Term</a> and clean up</p>
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<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">|Display title</ins>=<ins style="font-weight: bold; text-decoration: none;">drag</ins></div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>{{<del style="font-weight: bold; text-decoration: none;">TermHeader}}</del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">|Definitions</ins>=<ins style="font-weight: bold; text-decoration: none;">{{Definition</ins></div></td></tr>
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<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">|Meaning</ins>=(''Or'' resistance.) The frictional impedance offered by air to the motion of bodies passing through it. More precisely, the component of [[aerodynamic force]] parallel to the direction of mean flow.</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"><div class</del>=<del style="font-weight: bold; text-decoration: none;">"termentry"></del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">|Explanation</ins>=At very low speeds, most of the drag exerted by the air on a body moving through it is due to [[viscous drag]] (or [[skin friction]]) acting through a fairly thin boundary layer. In the case of spheres, the low-speed [[air resistance]] is given by [[Stokes's law]]. For higher speeds, so-called [[form drag]] or [[pressure drag]] arises as a result of separation of the [[laminar boundary layer]] creating a [[wake]] region of chaotic flow in which the [[pressure]] is reduced. In general, for large [[Reynolds numbers]], form drag is far more significant than viscous drag. The [[velocity]] dependence of air resistance changes more or less continuously from [[linear]] dependence in the viscous range to velocity-squared dependence at high speeds. The latter dependence is given by [[Rayleigh's formula]], <blockquote>[[File:ams2001glos-De45.gif|link=|center|ams2001glos-De45]]</blockquote> where &#x003c1; is the [[density]] of the medium, ''L'' a characteristic linear dimension of the body, and ''U'' the speed of the body relative to the fluid. The [[drag coefficient]] ''C''<sub>''D''</sub> is proportional to an experimentally determined power of the Reynolds number. At speeds approaching that of [[sound]], an additional source of drag arises out of the formation of [[shock waves]].</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"> <div class</del>=<del style="font-weight: bold; text-decoration: none;">"term"></del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>}}</div></td></tr>
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<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"> </div></del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> </div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"><div class</del>=<del style="font-weight: bold; text-decoration: none;">"definition"><div class="short_definition"></del>(''Or'' resistance.) The frictional impedance offered by air to the motion of bodies passing through it. More precisely, the component of [[aerodynamic force]] parallel to the direction of mean flow.<del style="font-weight: bold; text-decoration: none;"></div><br/> <div class</del>=<del style="font-weight: bold; text-decoration: none;">"paragraph"></del>At very low speeds, most of the drag exerted by the air on a body moving through it is due to [[viscous drag]] (or [[skin friction]]) acting through a fairly thin boundary layer. In the case of spheres, the low-speed [[air resistance]] is given by [[Stokes's law]]. For higher speeds, so-called [[form drag]] or [[pressure drag]] arises as a result of separation of the [[laminar boundary layer]] creating a [[wake]] region of chaotic flow in which the [[pressure]] is reduced. In general, for large [[Reynolds numbers]], form drag is far more significant than viscous drag. The [[velocity]] dependence of air resistance changes more or less continuously from [[linear]] dependence in the viscous range to velocity-squared dependence at high speeds. The latter dependence is given by [[Rayleigh's formula]], <del style="font-weight: bold; text-decoration: none;"><div class="display-formula"></del><blockquote>[[File:ams2001glos-De45.gif|link=|center|ams2001glos-De45]]</blockquote<del style="font-weight: bold; text-decoration: none;">></div</del>> where &#x003c1; is the [[density]] of the medium, ''L'' a characteristic linear dimension of the body, and ''U'' the speed of the body relative to the fluid. The [[drag coefficient]] ''C''<sub>''D''</sub> is proportional to an experimentally determined power of the Reynolds number. At speeds approaching that of [[sound]], an additional source of drag arises out of the formation of [[shock waves]].<del style="font-weight: bold; text-decoration: none;"></div><br/> </div></del></div></td><td colspan="2" class="diff-side-added"></td></tr>
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</table>WikiTeqhttps://glossary.ametsoc.org/w/index.php?title=Drag&diff=17135&oldid=prevUnknown user at 22:05, 20 February 20122012-02-20T22:05:41Z<p></p>
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<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><div class="definition"><div class="short_definition">(<del style="font-weight: bold; text-decoration: none;"><br/></del>''Or'' resistance.) The frictional impedance offered by air to the motion of bodies passing through it. More precisely, the component of [[aerodynamic force]] parallel to the direction of mean flow.</div><br/> <div class="paragraph">At very low speeds, most of the drag exerted by the air on a body moving through it is due to [[viscous drag]] (or [[skin friction]]) acting through a fairly thin boundary layer. In the case of spheres, the low-speed [[air resistance]] is given by [[Stokes's law]]. For higher speeds, so-called [[form drag]] or [[pressure drag]] arises as a result of separation of the [[laminar boundary layer]] creating a [[wake]] region of chaotic flow in which the [[pressure]] is reduced. In general, for large [[Reynolds numbers]], form drag is far more significant than viscous drag. The [[velocity]] dependence of air resistance changes more or less continuously from [[linear]] dependence in the viscous range to velocity-squared dependence at high speeds. The latter dependence is given by [[Rayleigh's formula]], <div class="display-formula"><blockquote>[[File:ams2001glos-De45.gif|link=|center|ams2001glos-De45]]</blockquote></div> where &#x003c1; is the [[density]] of the medium, ''L'' a characteristic linear dimension of the body, and ''U'' the speed of the body relative to the fluid. The [[drag coefficient]] ''C''<sub>''D''</sub> is proportional to an experimentally determined power of the Reynolds number. At speeds approaching that of [[sound]], an additional source of drag arises out of the formation of [[shock waves]].</div><br/> </div></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><div class="definition"><div class="short_definition">(''Or'' resistance.) The frictional impedance offered by air to the motion of bodies passing through it. More precisely, the component of [[aerodynamic force]] parallel to the direction of mean flow.</div><br/> <div class="paragraph">At very low speeds, most of the drag exerted by the air on a body moving through it is due to [[viscous drag]] (or [[skin friction]]) acting through a fairly thin boundary layer. In the case of spheres, the low-speed [[air resistance]] is given by [[Stokes's law]]. For higher speeds, so-called [[form drag]] or [[pressure drag]] arises as a result of separation of the [[laminar boundary layer]] creating a [[wake]] region of chaotic flow in which the [[pressure]] is reduced. In general, for large [[Reynolds numbers]], form drag is far more significant than viscous drag. The [[velocity]] dependence of air resistance changes more or less continuously from [[linear]] dependence in the viscous range to velocity-squared dependence at high speeds. The latter dependence is given by [[Rayleigh's formula]], <div class="display-formula"><blockquote>[[File:ams2001glos-De45.gif|link=|center|ams2001glos-De45]]</blockquote></div> where &#x003c1; is the [[density]] of the medium, ''L'' a characteristic linear dimension of the body, and ''U'' the speed of the body relative to the fluid. The [[drag coefficient]] ''C''<sub>''D''</sub> is proportional to an experimentally determined power of the Reynolds number. At speeds approaching that of [[sound]], an additional source of drag arises out of the formation of [[shock waves]].</div><br/> </div></div></td></tr>
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</table>Unknown userhttps://glossary.ametsoc.org/w/index.php?title=Drag&diff=17134&oldid=prevUnknown user: Created page with " {{TermHeader}} {{TermSearch}} <div class="termentry"> <div class="term"> == drag == </div> <div class="definition"><div class="short_definition">(<br/>''Or'' resistanc..."2012-01-27T00:53:40Z<p>Created page with " {{TermHeader}} {{TermSearch}} <div class="termentry"> <div class="term"> == drag == </div> <div class="definition"><div class="short_definition">(<br/>''Or'' resistanc..."</p>
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== drag ==<br />
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<div class="definition"><div class="short_definition">(<br/>''Or'' resistance.) The frictional impedance offered by air to the motion of bodies passing through it. More precisely, the component of [[aerodynamic force]] parallel to the direction of mean flow.</div><br/> <div class="paragraph">At very low speeds, most of the drag exerted by the air on a body moving through it is due to [[viscous drag]] (or [[skin friction]]) acting through a fairly thin boundary layer. In the case of spheres, the low-speed [[air resistance]] is given by [[Stokes's law]]. For higher speeds, so-called [[form drag]] or [[pressure drag]] arises as a result of separation of the [[laminar boundary layer]] creating a [[wake]] region of chaotic flow in which the [[pressure]] is reduced. In general, for large [[Reynolds numbers]], form drag is far more significant than viscous drag. The [[velocity]] dependence of air resistance changes more or less continuously from [[linear]] dependence in the viscous range to velocity-squared dependence at high speeds. The latter dependence is given by [[Rayleigh's formula]], <div class="display-formula"><blockquote>[[File:ams2001glos-De45.gif|link=|center|ams2001glos-De45]]</blockquote></div> where &#x003c1; is the [[density]] of the medium, ''L'' a characteristic linear dimension of the body, and ''U'' the speed of the body relative to the fluid. The [[drag coefficient]] ''C''<sub>''D''</sub> is proportional to an experimentally determined power of the Reynolds number. At speeds approaching that of [[sound]], an additional source of drag arises out of the formation of [[shock waves]].</div><br/> </div><br />
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[[Category:Terms_D]]</div>Unknown user