Two-dimensional, wedge-induced oblique detonation waves (ODWs) subject to periodic inflow are simulated using the reactive Euler equations with a two-step induction–reaction kinetic model. The focus of this work is how unsteadiness sinusoidal density disturbance varying frequency and amplitude influences an initially established ODW structure. Three fundamental structures different transition t...

We explore the stability of wakes arising from 2D flow actuators based on linear momentum actuator disc theory. We use stability and sensitivity analysis (using adjoints) to show that the wake stability is controlled by the Reynolds number and the thrust force (or flow resistance) applied through the turbine. First, we report that decreasing the thrust force has a comparable stabilising effect ...

Abstract In this study, the heat relocation properties of quadratic thermal radiation and convective unsteady stagnation point flow electro-magnetic Sutterby nanofluid past a spinning sphere under zero mass flux heating conditions are investigated. The governing equations developed expressed as partial differential equations, which afterwards transformed into ordinary by applying similarity con...

Dizziness, or the feeling of light-headedness or vertigo, is characterised by being in the state of unsteadiness or by having a feeling of whirling sensation. Dizziness can be induced by benign activities including spinning, state of disequilibrium to life-threatening disorders like infections, Dandy’s syndrome, Meniere’s disease, or due to psychiatric origins or due to anxiety. Various signs, ...

This paper deals with the analysis of an unsteady mixed convection flow of a fluid saturated porous medium adjacent to heated/cooled semi-infinite stretching vertical sheet in the presence of heat source. The unsteadiness in the flow is caused by continuous stretching of the sheet and continuous increase in the surface temperature. We present the analytical and numerical solutions of the proble...

One should never sleep during day-time after eating. Such sleep excites phlegm and bile and brings on such diseases as jaundice, painful headaches, languor and unsteadiness, as also heaviness of the limbs, loss of lightness of the body, loss of appetite, dropsical swellings, hiccough, inflammation of the Schneiderian membrane, loss of memory and intelligence, hemicrania, urticaria evanida, erup...