ZBOT-1 CFD Model Predictions

Figure 2. Validation of ZBOT-1 CFD Model Predictions for fluid flow and deformation of a spherical ullage in microgravity by a subcooled liquid jet mixing against the ZBOT-1 experimental results from left to right: (a) Model prediction of ullage position and deformation and flow vortex structures during subcooled jet mixing; (b) PIV image capture of flow vortex structures during jet mixing; (c) Ullage deformation captured by white light imaging; and (d) CFD model depiction of temperature contours during subcooled jet mixing.

jsc2025e067419 (8/5/2025) --- Validation of model predictions of fluid flow in a spherical tank in microgravity for the ZBOT-1 experiment. On the left, a model of the position of unfilled space and deformation and flow of the liquid structures (colored image) and an image of the actual flow. On the right, a captured image of deformation of the unfilled space and a colored model of temperature contours during mixing. Credit: Case Western Reserve University

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