A time-based injection module for monosegmented continuous flow systems and related techniques, which uses three independently controlled solenoid valves, is described. A timer c'cuit employing three LC. 555s and three TIP-121 transistors was constructed to control the injection module valves. The injection device was tested with non-reacting chemical systems (for example with a spectro-photome...

We investigate the eigenvalue spectrum of the one-dimensional laminar premixed flame in a reactive mixture described by detailed mass-action kinetics. All the physical scales, spatial and temporal, inherent in a reacting system are accurately identified via eigenvalue analysis. The interplay between chemistry and transport is addressed via conducting a spectral analysis of the reactive flow str...

The ubiquity of surface-volume reactions in biological and industrial processes makes knowledge of their kinetics critical. This has spurred technological advances in several biosensors designed to measure rate constants, such as the Flexchip and the dotLab. These biosensors have multiple reacting zones in a single flow channel, and hence they also serve as good model systems for biochemical sy...

A high-order projection scheme was developed for the study of chemically reacting flows in the lowMach number limit. The numerical approach for the momentum transport uses a combination of cell-centered/cell-averaged discretizations to achieve a fourth-order formulation for the pressure projection algorithm. This scheme is coupled with a second-order in time operator-split stiff approach for th...

Predicting particle dispersion in recirculating two-phase flows is a key issue for reacting flows and a potential application of Large Eddy Simulation (LES) methods. In this study, Euler/Euler and Euler/Lagrange LES approaches are compared in the bluff body configuration from Borée et al. [1] where glass beads are injected into a complex recirculating flow. These tests are performed for non-rea...

Axisymmetric jets impinging perpendicularly on a wall are encountered in a variety of real-life situations such as Chemical Vapor Deposition (CVD) processes (Goodwin, 2003). Although the fluid mechanics of the wall-impinging jets are interesting phenomena in their own right, this topic is studied here for two reasons. The first is to assess the extent to which experimental data and numerical da...

The liquid rocket propellant burns inadequately in the combustion chamber; therefore, exhaust gas reacts with oxygen and heat that was generated, which turn affects thermal environment. By using finite-rate chemical kinetics discrete ordinates method, calculation model for four-engine flowfield is established, numerically investigates afterburning effect on environment of engine plume under dif...

A new compact active turbulence generator is developed, tested, and characterized, which extends the capabilities of such generators used in turbulent premixed combustion research. The composed two blades that resemble shape bow-ties. Hot-wire anemometry high-speed imaging are performed to characterize non-reacting flow produced by dynamics, respectively. Two mean bulk velocities 5.0 7.0 m/s ex...