This paper investigates the behavior of non-Newtonian fluids in hydrocyclones using computational fluid dynamics (CFD). Hydrocyclones are devices used to separate particles or liquids of different densities from fluid streams, with applications in various industries such as water treatment, food and mineral processing, and petroleum extraction. The study focuses on understanding the complex patterns of pressure, viscosity, and velocity within hydrocyclones to optimize particle separation efficiency. Key aspects of the research include: 1. **Geometry and Construction**: The hydrocyclone's design, including its cylindrical and conical sections, vortex finder, and inlet and outlet configurations, are detailed. 2. **Performance Parameters**: Definitions of key performance parameters such as separation efficiency, partition number, solids recovery, and concentration ratio are provided. 3. **Separation Mechanism**: The primary vortex, secondary vortex, and air core formation are explained, detailing how these phenomena contribute to particle separation. 4. **Fluid Velocity Distribution**: The axial, radial, and tangential velocity components are analyzed, highlighting their roles in particle separation. 5. **Application in Food Industry**: The hydrocyclone's role in food processing, particularly in particle separation, is discussed, emphasizing its advantages over traditional methods like centrifugation and membrane filtration. 6. **CFD Analysis**: The CFD analysis process, including pre-processing, solver execution, and post-processing, is described in detail. The study uses the commercial software COMSOL Multiphysics to model the hydrocyclone flow field, focusing on non-Newtonian fluids. The research aims to optimize the design and operating parameters of hydrocyclones to improve particle separation efficiency in viscoelastic food solutions, ultimately enhancing food processing technology and product quality.This paper investigates the behavior of non-Newtonian fluids in hydrocyclones using computational fluid dynamics (CFD). Hydrocyclones are devices used to separate particles or liquids of different densities from fluid streams, with applications in various industries such as water treatment, food and mineral processing, and petroleum extraction. The study focuses on understanding the complex patterns of pressure, viscosity, and velocity within hydrocyclones to optimize particle separation efficiency. Key aspects of the research include: 1. **Geometry and Construction**: The hydrocyclone's design, including its cylindrical and conical sections, vortex finder, and inlet and outlet configurations, are detailed. 2. **Performance Parameters**: Definitions of key performance parameters such as separation efficiency, partition number, solids recovery, and concentration ratio are provided. 3. **Separation Mechanism**: The primary vortex, secondary vortex, and air core formation are explained, detailing how these phenomena contribute to particle separation. 4. **Fluid Velocity Distribution**: The axial, radial, and tangential velocity components are analyzed, highlighting their roles in particle separation. 5. **Application in Food Industry**: The hydrocyclone's role in food processing, particularly in particle separation, is discussed, emphasizing its advantages over traditional methods like centrifugation and membrane filtration. 6. **CFD Analysis**: The CFD analysis process, including pre-processing, solver execution, and post-processing, is described in detail. The study uses the commercial software COMSOL Multiphysics to model the hydrocyclone flow field, focusing on non-Newtonian fluids. The research aims to optimize the design and operating parameters of hydrocyclones to improve particle separation efficiency in viscoelastic food solutions, ultimately enhancing food processing technology and product quality.