Indoor View Factor Calculator - Problem with Grass (Material: RoofVegetation) Roughness - Grasshopper2024-03-29T09:56:21Zhttps://www.grasshopper3d.com/forum/topics/indoor-view-factor-calculator-problem-with-grass-material?groupUrl=ladybug&commentId=2985220%3AComment%3A1691177&groupId=2985220%3AGroup%3A658987&feed=yes&xn_auth=noTo be honest, I am still unsu…tag:www.grasshopper3d.com,2017-02-14:2985220:Comment:16914182017-02-14T17:26:18.890ZRafael A.https://www.grasshopper3d.com/profile/RafaelA
<p>To be honest, I am still unsure of the best way to get around this, I'll keep testing and update around here.</p>
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<p>In my opinion, there should be a way to fix it on the Indoor View Factor Calculator, I'll try to have a deeper look inside it. Maybe, testing some other ways to assign the material to the surface will make it work, so that the RoofVegetation object for energy plus can be maintained.</p>
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<p>Perhaps someone around the forum has run into a similar…</p>
<p>To be honest, I am still unsure of the best way to get around this, I'll keep testing and update around here.</p>
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<p>In my opinion, there should be a way to fix it on the Indoor View Factor Calculator, I'll try to have a deeper look inside it. Maybe, testing some other ways to assign the material to the surface will make it work, so that the RoofVegetation object for energy plus can be maintained.</p>
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<p>Perhaps someone around the forum has run into a similar problem,</p>
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<p>Rafael</p>
<p></p> I believe that the customized…tag:www.grasshopper3d.com,2017-02-14:2985220:Comment:16911772017-02-14T12:21:56.133ZJulia Thttps://www.grasshopper3d.com/profile/JuliaT
<p>I believe that the customized opaque material will replicate a grass on every aspect but the evapotranspiration. As I understood you were more concern about radiant temperatures and not about comfort I considered it as a good option.</p>
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<p>In the case that you are more interested on the comfort, hence on the evapotranspiration effect, you may find easier just to put in the "_soilTypeOrMat" of the ground zone the option 2 (Moits soil). This may simplify your workflow. However, if you…</p>
<p>I believe that the customized opaque material will replicate a grass on every aspect but the evapotranspiration. As I understood you were more concern about radiant temperatures and not about comfort I considered it as a good option.</p>
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<p>In the case that you are more interested on the comfort, hence on the evapotranspiration effect, you may find easier just to put in the "_soilTypeOrMat" of the ground zone the option 2 (Moits soil). This may simplify your workflow. However, if you are more interested on a comparison of different types of grass this wont work (as you had the default green roof material I didn't think that was your case, but no idea)</p>
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<p>I have to confess that I tried to introduce the material on "HB Surfaces" and then plug it to the ground zone with the option 2 that I mentioned, but I didn't work for me in the first attempt. Maybe doing something similar to that you have an option</p> Hi Julia! :)
Thanks for your…tag:www.grasshopper3d.com,2017-02-14:2985220:Comment:16913372017-02-14T11:56:11.630ZRafael A.https://www.grasshopper3d.com/profile/RafaelA
<p>Hi Julia! :)</p>
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<p>Thanks for your suggestions and taking the time on this.</p>
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<p>I see that you are using an opaque material definition with the soil layer, disregarding the grass. By specifying a simple opaque material, I think that EnergyPlus would not take into account the</p>
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<p><em>long wave and short wave radiative exchange within the plant canopy</em></p>
<p><em>plant canopy effects on convective heat transfer</em></p>
<p><em>and…</em></p>
<p>Hi Julia! :)</p>
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<p>Thanks for your suggestions and taking the time on this.</p>
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<p>I see that you are using an opaque material definition with the soil layer, disregarding the grass. By specifying a simple opaque material, I think that EnergyPlus would not take into account the</p>
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<p><em>long wave and short wave radiative exchange within the plant canopy</em></p>
<p><em>plant canopy effects on convective heat transfer</em></p>
<p><em>and evapotranspiration from the soil and plants</em></p>
<p style="text-align: right;"><em>(engineering reference of EnergyPlus)</em></p>
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<p>which I guess are some of the benefits of this assembly. Since for this case we are mainly looking at the resultant radiant temperature,</p>
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<p>Wouldn't this be an oversimplification of the problem? </p>
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<p>Rafael</p>
<p></p> Hey Rafa,
As soon as you rep…tag:www.grasshopper3d.com,2017-02-14:2985220:Comment:16911642017-02-14T11:09:00.154ZJulia Thttps://www.grasshopper3d.com/profile/JuliaT
<p>Hey Rafa,</p>
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<p>As soon as you replicate the material from scratch and you add it to the library it works.</p>
<p><a href="http://storage.ning.com/topology/rest/1.0/file/get/2769244933?profile=original" target="_self"><img class="align-full" src="http://storage.ning.com/topology/rest/1.0/file/get/2769244933?profile=RESIZE_1024x1024" width="721"></img></a></p>
<p>I tried adding your material and I don't really know why it was creating same error.</p>
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<p>Hope it…</p>
<p>Hey Rafa,</p>
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<p>As soon as you replicate the material from scratch and you add it to the library it works.</p>
<p><a href="http://storage.ning.com/topology/rest/1.0/file/get/2769244933?profile=original" target="_self"><img width="721" class="align-full" src="http://storage.ning.com/topology/rest/1.0/file/get/2769244933?profile=RESIZE_1024x1024"/></a></p>
<p>I tried adding your material and I don't really know why it was creating same error.</p>
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<p>Hope it helps,</p>
<p>Julia</p>