A variational technique is used to derive analytical expressions for the sensitivity of several geometric indicators of flow separation to steady actuation. Considering the boundary layer flow above a wall-mounted bump, the six following representative quantities are considered: the locations of the separation point and reattachment point connected by the separatrix, the separation angles at th...

h = 9000. The discretisation is performed using a spanwise periodic spectral/hp element method. The inlet flow has turbulent velocity and pressure fields that are formed by a regenerating channel segment upstream of the inlet. Time and spanwise averages show secondary and tertiary corner eddies in addition to the primary recirculation bubble, while streamlines show a small eddy forming at the d...

At transitional Reynolds numbers 104 − 105 , many smooth airfoils experience laminar flow separation and possible turbulent reattachment, where the occurrence of either state is strongly influenced by small changes in the surrounding environment. TheEppler 387 airfoil is one ofmany airfoils that can havemultiple lift and drag states at a single wing incidence angle. Prestall hysteresis and abru...

Movements of molecular motors on cytoskeletal filaments are described by directed walks on a line. Detachment from this line is allowed to occur with a small probability. Motion in the surrounding fluid is described by symmetric random walks. Effects of detachment and reattachment are calculated by an analytical solution of the master equation in two and three dimensions. Results are obtained f...

Three-dimensional, transient simulations of the plasma flow inside different plasma spray torches have been performed using a local thermodynamic equilibrium model solved by a multiscale finite element method. The model describes the dynamics of the arc without any further assumption on the reattachment process except for the use of an artificially high electrical conductivity near the electrod...

INTRODUCTION The fracture of front teeth is one of the routine presentations of traumatic injuries. The treatment of a fractured tooth involving the pulp includes root canal therapy and post placement followed by core build-up or by the extraction of the fractured tooth if it is not restorable. CASE PRESENTATION We report a case of an adult male who had traumatized both his maxillary central ...

Infection of surgical wounds is a severe problem. Conventional tissue reattachment methods have limits of incomplete sealing and high susceptibility to infection. Medical adhesives have several advantages over traditional tissue reattachment techniques, but still have drawbacks, such as the probability of infection, low adhesive strength, and high cytotoxicity. Recently, a new medical adhesive ...

Dr. Nelson has no financial or proprietary interest in the materials presented herein. doi: 10.3928/01913913-20140507-02 Prior to 2000, there was no surgical treatment for patients with nystagmus who did not have associated strabismus or an eccentric gaze angle and null position. Positive therapeutic effects of the four-muscle tenotomy and reattachment procedure, including a generalized broaden...

In vitro investigations of the responses of vascular endothelium to fluid shear stress have typically been conducted under conditions where the time-mean shear stress is uniform. In contrast, the in vitro experiments reported here have re-created the large gradients in surface fluid shear stress found near arterial branches in vivo; specifically, we have produced a disturbed-flow region that in...

Psychological reattachment means mentally tuning into one's work before starting in the morning. In this daily diary study, we investigated whether psychological may be beneficial not only for engagement but also proactivity during day. We moreover considered two competing theoretical propositions regarding role of effect sleep quality on and proactivity. The first proposition assumes a cogniti...