Turbiinimallit

Turbiinimallit refers to a category of computational fluid dynamics (CFD) models used to simulate the behavior of turbomachinery, such as turbines, compressors, and pumps. These models are essential for understanding and optimizing the performance of these complex rotating machines.

The primary goal of turbiinimallit is to predict fluid flow, pressure, temperature, and forces within the rotating components of turbomachinery. This involves solving the governing equations of fluid mechanics, typically the Navier-Stokes equations, under specific conditions relevant to the turbomachine.

Different types of turbiinimallit exist, varying in their level of detail and computational cost. Some models focus on the overall performance of the turbomachine, treating it as a single stage or a series of stages with averaged properties. These are often referred to as throughflow or mean-line models. More detailed models, known as 3D CFD models, simulate the flow through each individual blade and passage, providing a highly resolved picture of the flow field.

Key aspects captured by turbiinimallit include the generation of torque, the efficiency of energy conversion, the prediction of flow separation and stall, and the identification of potential areas for performance improvement. They are used extensively in the design and development phases of turbomachinery to reduce the need for physical prototyping and testing.

The accuracy of turbiinimallit depends on several factors, including the complexity of the turbulence model used, the quality of the computational mesh, and the boundary conditions applied. Ongoing research aims to improve the predictive capabilities of these models, particularly for complex flow phenomena such as multi-phase flow and aeroelastic interactions.