Internal Combustion Engine Modeling Framework In Simulink
With the isentropic relationships given in Equation (40), the unknown variables can be solved iteratively with Equation (forty three) by way of Equation (50) according to the movement condition (subsonic forward, subsonic reverse, choked ahead, and choked reverse). For each stream state of affairs, the velocity vary, unknown variables, immediately utilized constraints, and iteration equation numbers are summarized in Desk 1. Be aware that the throat velocity dictates the solution methodology however can also be an unknown parameter. The equations for a given circulate condition are continuously differentiable and can be solved using a Newton-type solver. However, when considering the solution as a complete, equations will not be continuously differentiable at , , or . Consequently, every stream condition is evaluated individually.
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