Environmental analysis Independent tool study / 01

Sunlight
across the facade.

Radiation on the facade. Daylight on the floor.

Explore radiation, interior daylight, and wind across building geometry.

Mumbai · June 21 · early-design comparison

Facade model

Loading glazing + fins…

JUN 21 · 17:00

Drag to orbit · scroll to zoom · pinch Radiation target · analysis meshShadow blocker · fins

—to—W/m²

Sun direction

RESULTS

Radiation result

No runs yet

Run historyMean for each run · range from minimum to peak.

MeanMin–peak rangeTap a bar, or use arrow keys then Enter or Space, to pin a baseline.

Run radiation to start a comparison.

WEATHER CONTEXTSky luminance fieldLoad an EPW station to see the selected sky condition. Diffuse illuminance—Sun altitude— Open sky fieldClose sky field

0 · lower1 · higher

Sun marker · selected-day path

SELECTED EPW HOUR

Diffuse illuminance: —
Direct normal radiation: —
Global horizontal radiation: —
EPW sky cover: —
Sun position: —

Perez-style relative sky-luminance estimate, normalized from 0 to 1. EPW cloud cover broadens the bright region illustratively; it does not recreate cloud shapes. This is not measured luminance and does not drive the facade or daylight solver.

Facade radiation

Radiation

Adjust solar time and shading.

Preparing facade layers…

WEATHER CONTEXT

Sky conditions

The field follows the selected Indian EPW station, date, and local hour. Use Sky mode above to expand the dome over the model.

Load an EPW station to see its sky condition.

Diffuse illuminance: —
Direct normal radiation: —
Global horizontal radiation: —
EPW sky cover: —
Sun position: —

This is a Perez-style relative luminance estimate, normalized from 0 to 1. Cloud cover broadens the bright region illustratively; it does not reconstruct cloud shapes. This visualization does not drive the facade, daylight, or wind solver.

Shading

Show selected shadeLoading shading geometry…

Vertical fin configurationLoading options…

Fin length —Fin spacing —Fin rotation 0°0° = perpendicular; ±90° = edge-on.

Shade opacity 74%Preview only.Loading shading geometry…

Full model context12 pieces · room walls block daylight

Preparing the new base model…

Weather file & time

Indian EPW weather station59 Indian stations · 2011–2025 TMYx hourly weather drives wind, radiation, and daylight.

Loading Mumbai EPW…

Reading hourly weather record…

Model north0°

Drag the arrow around the compass to rotate solar north. The compass follows your model camera angle.

Month JuneDay 21

Selected date · June 21 Local standard time17:00

Radiation analysis

Analysis mesh densitySwap the analyzed quad mesh to compare detail and speed. Radiation is mapped once per quad; triangles are internal only.

ACTIVE ANALYSIS MESH5,762 quadsRadiation values are calculated on this mesh.

SERVER COMPUTE TIMELatest · — ms

Light— ms

Balanced— ms

Dense— ms

Session average · PHP processing time · all successful readings

Include shadow blockers

Across time

Radiation profiles

Build a day or year profile.

Day and year charts show mean radiation across the active mesh.

Day loops 06:00–18:00 until stopped · one request at a time

Build a profile to reveal its daily or seasonal pattern.

Profiles use the current north offset and shadow blockers.

About this study

Experimental early-design screening. Indicative results only; not validated environmental simulation.

Hosted analysis uses project geometry and dedicated radiation, daylight, and wind solvers.

Radiation maps each facade quad. Sun rays test the selected shade and fixed blocker. Use Focus preview to inspect the live, unobstructed shade copy.

The visual context includes opaque room walls and a separate roof surface. Glazing stays open to daylight rays.

Current settings + mapped values · JSON file

Reading the model

One model.
Four study views.

Radiation, daylight, and wind use purpose-built analysis meshes. Solar studies share the Mumbai location and selected shade geometry; wind uses its own direction and speed settings.

Facade / radiation

Radiation is mapped per quad across the selected facade mesh. The chosen shade and fixed blocker are checked against sun rays. Change mesh density to compare resolution and solve time.

Floor / daylight

Daylight is measured on a separate interior floor mesh. The shade can block direct sun and sky, or contribute a reflected-light bounce to the reading.

Building / wind

Live wind solves a three-dimensional velocity field. Inspect height maps, vertical sections and flow trails, or select the legacy surface-screening method.

Sky / weather

The selected EPW station, date, and hour shape a relative sky luminance field. Sky mode shows that atmospheric context beside the station readings.

Study limitExperimental early-design screening. Indicative results only; not validated environmental simulation.

Analysis details

Waiting for the sample geometry.