In this paper, different image preprocessing methods are compared based on their ability to
remove noise and to segment the images. Two filters, namely, Median filter and Wiener filter …

A laser-induced NO fluorescence technique was applied to measure velocity in a hypersonic
shock tunnel nozzle exit. For the application of the technique, a detailed study of the density …

Flow variations from one cycle to the next significantly influence the mixture formation and
combustion processes in engines. Therefore, it is important to understand the fluid motion …

A laser-induced fluorescence (LIF)-based nitric-oxide flow-tagging technique was applied to
measure both velocity and NO lifetime in a hypersonic shock tunnel from two experimental …

Cycle-to-cycle flow variations significantly influence the combustion variations from one
cycle to the next, particularly at low operating loads in small sparkignition engines. Hence in …

Laser-based diagnostic techniques like particle image velocimetry (PIV) and molecular
tagging velocimetry (MTV) are used to measure flow fields at a high spatial resolution. Post …

Determining the centroids of circular marks is a problem that arises in many applications, for
example, fluid mechanics, computer graphics, coordinate meteorology, statistics, etc. The …

Design Features of Optically Accessible Engines for Flow and Combustion Studies-A
Review 2018-01-1775 For long time, the measurement of spatially and temporally varying …

A new molecular-based velocity method is developed for high-temperature flame gases
based on the hydroxyl tagging velocimetry (HTV) technique. In vibrationally excited HTV (VE …

In-cylinder fluid flow has been studied intensively due to its well-known impacts on
combustion and pollutant formation. The variation of the in-cylinder flow is a major …