Direct contact condensation jet in cross-flow using CFD

[+] Author and Article Information
Bernardo Alan de Freitas Duarte

Post-graduate student, Department of Mechanical Engineering, University of Uberlndia Brazil, Uberlndia 38400-902

Ricardo Serfaty

Engineer, Petrobras

Aristeu da Silveira Neto

Professor, Department of Mechanical Engineering, University of Uberlndia Brazil, Uberlndia 38400-902

1Corresponding author.

ASME doi:10.1115/1.4042779 History: Received October 25, 2018; Revised January 16, 2019


In the present work, Direct Contact Condensation (DCC) was studied using a mathematical and com- putational model with an eulerian approach. The homemade code MFSim was used to run all the computational simulations in the cluster of the Fluid Mechanics Laboratory from the Federal University of Uberlandia (UFU). The computational model was validated and showed results with high accuracy and low differences compared to previous works in the literature. A complex case study of DCC with cross-flow was then studied and the computa- tional model provided accurate results compared to experimental data from the literature. The jet centerline was well represented and the interface dynamic was accurately captured during all the simulation time. The investiga- tion of the velocity field provided information about the deeply transient characteristic of this flow. The v-velocity component presented the most large variations in time since the standard deviation was subjected to a variation of about 45% compared to the temporal average. In addition, the time history of the maximum resultant velocities observed presented magnitude from 29 m/s to 73 m/s. The importance of modelling 3D effects was confirmed with the relevance of the velocity magnitudes in the third axis component. Therefore, the eulerian phase change model used in the present study indicated the possibility to model even complex phenomena using an eulerian approach.

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