Abstract A hydrophilic gelatin suspension possesses thermal properties that may affect the ratio of convective to conductive heat transfer across a boundary. This ratio, also known as Nusselt's number, can represent laminar or turbulent flow regimes. In this study, thermal transitioning empirical values were determined using a gelatin as a polymer gel surrogate. The crux of this study was to (a) quantify heat transfer properties of the gelatin as a suspended semi-solid and (b) understand thermal profiles with respect to particle size and loading. We can adduce the existence of a thermally induced: lower rise velocity, stratified Nusselt number, and a boundary layer.

中文翻译：

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热分层外壳中 Nusselt 数的经验推导

摘要 亲水性明胶悬浮液具有的热特性可能会影响跨边界的对流与传导热传递的比率。这个比率，也称为 Nusselt 数，可以代表层流或湍流状态。在这项研究中，使用明胶作为聚合物凝胶替代物来确定热转变经验值。这项研究的关键是 (a) 量化作为悬浮半固体的明胶的传热特性，以及 (b) 了解与颗粒大小和负载有关的热分布。我们可以推断出热诱导的存在：较低的上升速度、分层的 Nusselt 数和边界层。