Natural gas-diesel dual fuel combustion is a beneficial strategy for achieving high efficient and low emissions operation in compression ignition engines, especially in genset application heavy duty diesel engine at rated power. This study aims to investigate a dual fuel engine performance and emissions using premixed natural gas and early direct injection of diesel fuel. Due to the different r...

This work aims to predict the transfer function of a given modal content inside circular duct with bellmouth inlet in presence mean flow. The is relation amplitude and phase between mode an observer located far-field. numerical solution obtained by finite element simulation which flow input data. Verification provided comparison analytical unbaffled uniform Influence from various parameters suc...

The sensitivities of current gravitational-wave detectors are limited around signal frequencies 100 Hz by mirror thermal noise. One proposed option to reduce this noise is operate the in a higher-order spatial laser mode. This operation would require high-power input beam such Here, we discuss generation Hermite–Gaussian modes HG2,2, HG3,3, and HG4,4 using one water-cooled light modulator (SLM)...

One of the challenges that models of AGN heating of the intracluster medium (ICM) face, is the question how the mechanical luminosity of the AGN is tuned to the radiative losses of the ICM. Here we implement a simple 1D model of a feedback mechanism that links the luminosity of the AGN to the accretion rate. We demonstrate how this simple feedback mechanism leads to a quasi-steady state for a b...

Hollow metal and composite baseball and softball bats exhibit two types of vibrational modes, bending modes and hoop modes. The hoop modes are unique to hollow bats and involve only a radial vibration of the barrel of the bat. The lowest frequency hoop mode is responsible for the both the "ping" sound of a metal bat and the so-called "trampoline effect." Modal analysis is used to determine the ...