Using magnetic resonance to validate predictions of the solid fraction formed during recalescence of freezing drops

Nuclear magnetic resonance (NMR) was used to validate a simple model (based on the Stefan number) for predicting the solid fraction formed during the recalescence of a supercooled liquid drop following nucleation. Experimental data were obtained using standard NMR techniques to measure the temporally resolved solid fraction of suspended drops following externally initiated nucleation. The results showed good agreement with the model predictions and also demonstrated the effectiveness of basic NMR techniques for obtaining such non-invasive data for the verification of solidification models.