Introduction A transient pulse technique is used to The calculationof aeroelastic response in " obtain harmonic forces from a time-marching the transonic regime continues to be an active solution of the complete unsteady transonic area of research because of the significanceof small perturbation potential equation. The flutter in this speed range. Finite-difference unsteady pressures and forces...

In this paper we establish several polynomials similar to Bernstein's polynomials and several refinements of  Hermite-Hadamard inequality for convex functions.

let g = (v, e) be a simple graph. hosoya polynomial of g isd(u,v)h(g, x) = {u,v}v(g)x , where, d(u ,v) denotes the distance between vertices uand v. as is the case with other graph polynomials, such as chromatic, independence anddomination polynomial, it is natural to study the roots of hosoya polynomial of a graph. inthis paper we study the roots of hosoya polynomials of some specific graphs.

in this paper, we give some determinantal and permanental representations of generalized lucas polynomials, which are a general form of generalized bivariate lucas p-polynomials, ordinary lucas and perrin sequences etc., by using various hessenberg matrices. in addition, we show that determinant and permanent of these hessenberg matrices can be obtained by using combinations. then we show, the ...

Anumerical study was conducted to investigate the effects of airfoil thickness on the thrust generation of plunging airfoils and to assess the contributions of pressure and viscous forces in flapping propulsion. A series of NACA symmetric airfoils with thickness ratio ranging from 4.0% to 20.0% of the airfoil chord length were used in the present study to undertake a same sinusoid plunging moti...

The edge detour index polynomials were recently introduced for computing the edge detour indices. In this paper we find relations among edge detour polynomials for the 2-dimensional graph of $TUC_4C_8(S)$ in a Euclidean plane and $TUC4C8(S)$ nanotorus.

Electricity is a strategic energy resource and very important for the livelihood of many people. The government has tried to free Indonesia from electricity crisis trying find alternative uses new renewable (EBT). committed that NRE will continue be developed ensure security in meet growing demand electricity. set target 23% share clean national mix 2025 31% 2030 through National Energy Policy ...

The influence of periodic excitation from synthetic jet actuators, SJA, on boundary layer separation and reattachment over a NACA 0025 airfoil at a low Reynolds number is studied. All experiments were performed in a low-turbulence recirculating wind tunnel at a Reynolds number of 100,000 and angle of attack of α = 5◦. Mounted below the surface of the airfoil, the SJA consists of four (32.77mm d...

In this work we study numbers and polynomials generated by two type of composition of generating functions and get their explicit formulae. Furthermore we state an improvementof the composita formulae's given in [6] and [3], using the new composita formula's we construct a variety of combinatorics identities. This study go alone to dene new family of generalized Bernoulli polynomials which incl...

Unlike in the case of high Reynolds number airfoil, selecting a turbulent closure model for low airfoil is still challenge. A used not necessarily suitable due to presence separation bubbles airfoil. In this study, we two simple models, Spalart-Allmaras and k- , calculating thrust coefficient as propeller determine their accuracy. It was found that there significant discrepancy between numerica...