Hi,everybody.

I wanna ask few questions about grid-based simulation.

1, Grid won't be filled with color

First in my simulation, grids won't be filled with color.

(↓ like this)

Just grid lines are colored.

It may be easy problem, but could someone tell me how to change this settings?

2, Simulations does'nt work correctly

I tried simulations for more than 10 times, but results seems to be not correct.

This( ↓)is the results got from another simulation soft.

Max illuminance is 3000 lux.

(※Result must be up-side down with DIVA's.)

But in DIVA, result is this( ↓).

I tried "dir" command, and made glazing with one surface, but results didn't change.

Is there anything I'm missing?

I think the louver and acrylic plate (on the south side) isn't considered correctly.

This louver is made with reflective material, so more lights should be reflected to north side.

The acrylic plate has refractility for same reason.

I attached the material file, so please tell me if my material file is wrong.

Sorry for long sentences.

Regards,

Yuki

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Dear Yuki,

> 1, Grid won't be filled with color

Grid-based results are shown as meshes in DIVA. So make sure that you are using a shaded viewport display mode, and also set your Mesh display settings accordingly. I have mine made to appear as below,

> 2, Simulations does'nt work correctly

It is really difficult to say what may be happening with your model based on the information provided. Can you upload the Rhino file in addition to your material.rad file?

Best,

Alstan

Dear Alstan

Thank you for early reply.

Thanks to you, problem1 was resolved.

I attached rhino file now.

Regards,

Yuki

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Hi Yuki,

I think the greyscale image you showed above in your part 2 is also somewhat displayed weirdly. In the file you sent me, the colors and the illuminance values are very different (actually only having any illuminance in areas near the facade) and displayed using a color scale.

I always recommend to render a visualization when something funny is going on with a model.

Not much light makes it through your fenestration which has multiple layers of glazing (2+ of dielectric and one glass) as well as a really dense louver system. At the very least, you will need more ambient bounces (ab as high as 7 or 10 as a guess for this model) for all of the reflections necessary to get past the louver system.

Best,

Alstan

Dear Alstan

Thank you for reply.

>I think the greyscale image you showed above in your part 2 is also somewhat displayed weirdly. In the file you sent me,the colors and the illuminance values are very different (actually only having any illuminance in areas near the facade

I was worried about this problem too.

When opening the same file in other computer, colors appeared correctly using the color scale.

So I think the settings of Rhino in my PC may be wrong as before.

I tried to modify this, but I couldn't find where is wrong...

Do you have any idea?

>Not much light makes it through your fenestration which has multiple layers of glazing (2+ of dielectric and one glass) as well as a really dense louver system. At the very least, you will need more ambient bounces (ab as high as 7 or 10 as a guess for this model) for all of the reflections necessary to get past the louver system.

Thank you for your advice.

Actually I realized the result of other simulation soft may be wrong too.

Sorry for disturbing you, but changing ab number might make the results better.

Regards,

Yuki

 > Do you have any idea?

I am not sure. You might wish to reset your display options. You can import the 'shaded' options I use with the attached file.

Best,

Alstan

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