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Showing 1 to 7 of 7 for “"Muffler"”.
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Investigation of thermoacoustic muffler
… construction and testing of a thermoacoustic muffler is discussed. The performance of the muffler is characterized by its ability to reduce the quality factor Q of an acoustic resonator. Measurement of the Q of a helium filler muffler were made for temperature differences ranging from 0 to …
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Modelling of low frequency muffler based on acoustic black hole effect
… on the performance of open termination ducts and mufflers working within low frequency range. The functioning of such linings has been associated to the Acoustic Black Hole effect. These structures work on the principle of impedance matching, and in theory, have been realized to achieve total …
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Large eddy simulation of acoustic propagation in turbulent flow through ducts and mufflers
… propagation of pulse in a simple expansion muffler, which is very often used in HVAC or automotive exhausts. A hybrid pressure-based compressible solver is developed and validated for a low Mach number flow simulation of acoustic pulse. This new solver is developed using C++ based OpenFOAM …
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Study of sound attenuation in elliptic ducts
… Passive noise--attenuating devices such as mufflers are usually employed in the intake or the exhaust flow path of such systems. A typical muffler element consists of an expansion chamber with inlet and outlet ports for the passage of the exhaust fluid. The difference in the size of the …
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The effect of negligence and misadjustment on the automotive engine
… was corrected. Things such as air cleaner and muffler restrictions, changes in the carburetor float level, and fouled spark plugs caused enough effect on the engine's performance to indicate the advisability of checking these things often. Other conditions which would normally be checked in a …
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Implementation of Refractory Foam Technology for Silencing Small IC Engines
With the need for stealth in defense applications steadily increasing, noise reduction continues to play an important role in the world of aeronautics. With the ever increasing number of small UAV flight vehicle designs and their stringent weight requirements, acoustic solutions become …