Search for dissertations about: "Duct pipe"
Showing result 6 - 10 of 10 swedish dissertations containing the words Duct pipe.
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6. Modeling of sound-turbulence interaction in low-Mach-number duct flows
Abstract : When sound waves propagate in a duct in the presence of turbulent flow, tur- bulent mixing can cause extra attenuation of the sound waves in addition to that caused by the viscothermal eects. Experiments show that compared to the vis- cothermal eects, turbulent absorption becomes the dominant contribution to the sound attenuation at suciently low frequencies. READ MORE
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7. Lagrangian Particles in Turbulence and Complex Geometries
Abstract : Wall-dominated turbulent dispersed multiphase flows occur in a variety of industrial, biological and environmental applications. The complex nature of the arrier and the dispersed phase is elevated to a higher level introducing geometrical complexities such as curved walls. READ MORE
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8. Particle-laden Turbulent Wall-bounded Flows in Moderately Complex Geometries
Abstract : Wall-bounded turbulent dispersed multiphase flows occur in a variety of industrial, biological and environmental applications. The complex nature of the carrier and the particulate phase is elevated to a higher level when introducing geometrical complexities such as curved walls. READ MORE
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9. Numerical Simulations of Cooling Concepts Related to Gas Turbine Combustors
Abstract : The mean by which a gas turbine combustor is cooled is of major importance for the efficiency and emission performance of the machine. The trends of increasing top cycle temperature and leaner combustion have also been accompanied by a need of efficient use of the cooling air. READ MORE
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10. Acoustic modelling and testing of advanced exhaust system components for automotive engines
Abstract : The increased use of the diesel engine in the passenger car, truck and bus market is due to high efficiency and lower fuel costs. This growing market share has brought with it several environmental issues for instance soot particle emission. READ MORE