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All publications for the rubric Visualisation

Test 1 – Visualization of the basic flow / Figure 2: Visualization of the basic flow with Nebula Fluid Extra Clean in the left image and via CFD simulation in the middle image. On the right, the visualization with water mist.

Test 1 – Visualization of the basic flow / Figure 2: Visualization of the basic flow with Extra Clean fog fluid in the left image and via CFD simulation in the middle image. On the right, the visualization with water mist.

Test 1 – Visualization of the basic flow / Figure 2: Visualization of the basic flow with Extra Clean fog fluid in the left image and via CFD simulation in the middle image. On the right, the visualization with water mist.

Test 2 – Visualization of vortex regions / Figure 3: Visualization of the vortex region with Extra Clean fog fluid in the left image, using CFD simulation in the middle image, and with water mist in the right image.

Test 2 – Visualization of vortex regions / Figure 3: Visualization of the vortex region with Nebelfluid Extra Clean in the left image, using CFD simulation in the middle image, and with water mist in the right image.

Test 2 – Visualization of Vortex Regions / Figure 3: Visualization of the vortex region with Nebula Fluid Extra Clean in the left image, via CFD simulation in the middle image, and with water mist in the right image.

Test 3 – Visualization of the Fog Ascent Height / Figure 4: Visualization of the fog ascent height with Fog Fluid Extra Clean with low impulse in the left image. The middle image shows the visualization with water vapor with low impulse. The right image also shows water vapor but with high impulse

Test 3 – Visualization of the Fog Rise Height / Figure 4: Visualization of the fog rise height with Fog Fluid Extra Clean with low momentum in the left image. The middle image shows the visualization with water vapor with low momentum. The right image also shows water vapor but with high momentum.

Test 3 – Visualization of the Fog Ascent Height / Figure 4: Visualization of the fog ascent height with fog fluid Extra Clean with low impulse in the left image. The middle image shows the visualization with water mist with low impulse. The right image also features water mist but with high impulse.

Table 2: Evaluation of the fog ascent height (see Figure 4)

Test 4 – Visualization of cloud dispersion in vortex areas / Figure 5: Visualization of cloud dispersion with Nebelfluid Extra Clean with low momentum in the left image. The middle image shows a CFD simulation, and the right image displays water mist with low momentum

Test 4 – Visualization of cloud dispersion in vortex areas / Figure 5: Visualization of cloud dispersion with Nebelfluid Extra Clean with low impulse in the left image. In the middle image via CFD simulation and in the right image with water mist with low impulse

Test 4 – Visualization of fog dispersion in vortex areas / Figure 5: Visualization of fog dispersion with fog fluid Extra Clean with low momentum in the left image. In the middle image via CFD simulation and in the right image with water fog with low momentum

Figure 1: Sinking of the water fog with increasing distance from the fog outlet at three different fog densities (1.1, 1.2, 1.3) and initial horizontal velocity of 0.5 m/s in the horizontal flow area (Source: Diploma thesis)6

Table 1: Requirements of VDI 2083 Sheet 3 for test substances and test equipment for flow visualization.

19.11.2023
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Visualisation

Which fog fluid is suitable for flow visualization according to GMP Annex 1?

The perfect fog fluid still does not exist. Pharmaceutical companies that perform or have performed airflow visualizations in critical cleanroom areas will find in this white paper comprehensive information to select the appropriate fog fluid for the specific application. A comparison between fog an…

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