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Abstract
Engineering problem solving such as process design, process optimization, safety analysis, etc.; relies widely on mathematical models of the process. One of the most important aspects in a chemical plant is the safety protocols assuring the safety of workers and equipment. In this study Computational Fluid Dynamics (CFD) methods are used to model different temperature probe positions in a pipe elbow. Different models were computed together in order to solve heat transfer model: heat transfer in fluid and solid substances and momentum balance model. Three probe geometries are defined to obtain different results containing velocity field, and heat transfer. Based on the results the geometries and positions are compared to each other in order to find out which position is the most suitable for control studies, based on the time response of the probes. COMSOL Multiphysics was used to implement and to couple of the physics models. Due to the number of the geometries and model parameters (position and the geometry of the probe; inlet velocity) the COMSOL model was connected to MATLAB via COMSOL MATLAB LiveLink for solving the repeatable steps.
Highlights
Temperature is one of the most common operating parameter in process industries
With the detailed modelling of fluid dynamics and heat transfer, operating regimes can be determined, and the system can be operated with the expected efficiency
With an adequate model of heat transfer, and other physical phenomena in a device even the controller parameters can be identified and an application can be developed capable of computing adequate controller parameters with different operational circumstances [1]
Summary
Temperature is one of the most common operating parameter in process industries. From refrigeration to high temperatures there is a wide range of operating temperatures in a chemical plant. Keywords Computational Fluid Dynamics · heat transfer · temperature probe position With an adequate model of heat transfer, and other physical phenomena in a device even the controller parameters can be identified and an application can be developed capable of computing adequate controller parameters with different operational circumstances [1].
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