Keywords: Reactor technologies, Separation systems, Oil and gas, Newtonian and non-Newtonian flows, Compressible and incompressible flows, Bio-chemical reaction.
Fluidization is a key mechanism in any oil and gas industry as it offers lower pressure drop, superior heat, and mass transfer. This is the regime where a solid behaves like a fluid in a specific size range. Analyses of hydrodynamic behavior in a fluidized bed reactor are crucial to deducing the performance of the reactor and the efficiency of the process. Simulations can also reveal the real-time complexity occurrence in high operating conditions.
Continuous Stirred Tank Reactor (CSTR)
Continuous stirred tank reactors are used widely for large and small-scale operations. For processes where a uniform composition is required at all times, CSTRs are used. Modeling CSTR poses an enormous simulation complexity in form of dynamic meshing due to the rotating impeller. Paanduv’s expertise in dynamic meshing can address such systems. Design and parameter optimization is performed to optimize the mixing and reduction of dead zones in the reactor. These processes can be valid for Newtonian as well as for non-Newtonian flows.
Battery Thermal Management
Gas and Solid Separator (Cyclone separator)
Diffusion of Gas from Liquid to Gas-phase in a Microfluidic Channel
Boiling and Condensation
Flow through a Porous media
Porous catalyst beds, membranes, and adsorbent beds are integral components that offer higher contact time between reactants. Porous media is governed by Darcy Forchheimer's law. Processes such as the flow of gases by adsorption, porous bed, and membranes are modeled.
Design of Reactor and Process Internals
Fuel cells enable the direct conversion of chemical energy into electrical energy. The reactants are constantly reacting to produce electricity and water as the by-product. Thermal and water management in these systems poses challenges to the smooth operations of fuel cells. Minimizing the pressure drop in the bipolar plate channels is yet another area of research that seems to be never-ending. The polarization curve considering all the important aspects in fuel cells to optimize the current density is also widely explored. These problems are addressed by computational fluid dynamics (CFD) and we are working to capture all the physics involved in these cutting-edge research areas. Multiphase flows and reactions, electrochemical reactions, flow through porous media, conjugate heat transfer, and pressure velocity coupling have to be coupled to obtain the complete solution for the fuel cell.
Reaction-driven Flows (Water splitting)
Oil, Water, and Air Mechanical Separator
Static mixer is used as an static internal component for thorough mixing of the reactants before entering the reactor, so that a premixed feed enters the reactor and reduces the overall energy consumption. Sometimes depending upon the feed type-Newtonian, non-Newtonian fluids the static mixer is changed. It is used widely in oil and gas industry. We have modeled a standard Kenics mixer and validated with experimental results.
The performance of the Kenics mixer is numerically evaluated and validated with verified experimental literature. The pressure drop ratio (Z-factor) and coefficient of variation (CoV) features have been used to evaluate the mixing performance in Kenics static mixer.
Combustion is a highly exothermic chemical reaction between the fuel and oxidizer. It has wide applicability in chemical processes starting from automotive, gasification, thermal power production, material synthesis, and explosion to aircraft engines. The details to be captured in these processes are fuel injection and mixing and flow velocity information, to measurements of combustion species and soot concentration. The detailed reaction and chemical kinetics are available in the literature. The CFD solvers are well suited for combustion problems.