An array of micro-channels in parallel connected by Z-manifold, under consideration for the cooling of MW-class gyrotron cavities for fusion applications, is analyzed here. The micro-channels should allow the removal of a very non-uniform heat load, which can reach a peak up to 25 MW/m2. The adjoint topology optimization method is applied to the manifold regions. In the first case study, the micro-channels are not equally spaced but rather distributed and a uniform flow distribution in the micro-channels is targeted. In the second case study, a uniform micro-channels distribution is considered, but a flow rate distribution shaped to follow the heat load is targeted. The results suggests that a uniform flow repartition among the channels is more easy to achieve with respect to the non-uniform one, which would possibly require some additional modification of the channel geometry, on top of the shaping of the manifolds.
Comparative analysis of different strategies exploiting the adjoint topology optimization method for enhancing the performance of a cooling device equipped with micro-channels
A. Cammi;
2022-01-01
Abstract
An array of micro-channels in parallel connected by Z-manifold, under consideration for the cooling of MW-class gyrotron cavities for fusion applications, is analyzed here. The micro-channels should allow the removal of a very non-uniform heat load, which can reach a peak up to 25 MW/m2. The adjoint topology optimization method is applied to the manifold regions. In the first case study, the micro-channels are not equally spaced but rather distributed and a uniform flow distribution in the micro-channels is targeted. In the second case study, a uniform micro-channels distribution is considered, but a flow rate distribution shaped to follow the heat load is targeted. The results suggests that a uniform flow repartition among the channels is more easy to achieve with respect to the non-uniform one, which would possibly require some additional modification of the channel geometry, on top of the shaping of the manifolds.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.