A spark energy deposition model in mixture fraction space for simulations of turbulent non-premixed flame ignition

Predicting the ignition probability remains important for designing reliable combustors.A spark ignition model in mixture fraction space is proposed and used in a Large Eddy Simulation (LES)-Conditional Moment Closure (CMC) simulation of initiation of a n-heptane spray swirl flame.The model is based on including source terms for the enthalpy and sp

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Research on Anti-overturning Device of Urban Rail Transit Trains

Objective During the operation of urban rail transit trains, incidents such as collisions, derailments and overturning may occur.It is essential to study the dynamic behavior of trains and the technology to prevent overturning under these conditions.Method Combining the actual vehicle windshield structure and vehicle dynamic envelope during operati

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Midlife vulnerability and food insecurity: Findings from low-income adults in the US National Health Interview Survey.

BackgroundFood insecurity, limited access to adequate food, in adulthood is associated with poor health outcomes that suggest a pattern of accelerated aging.However, little is known about factors that impact food insecurity in midlife which in turn could help to identify potential pathways of accelerated aging.MethodsLow-income adults (n = 17,866;

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