Helical pile foundations are a new foundation type for offshore wind power applications with high bearing capacity and good recovery that can be quickly easily constructed. In this study, the finite element method was used to simulate characteristics of helical after installation. For simulations, blade, deeply buried in single layer sand, selected. Through numerical vertical screw an ordinary ...

helical coil heat exchangers are widely used in industrial applications ranging fromcryogenic processes, air-conditioning, and nuclear reactors to waste heat recovery due totheir compact size and high heat transfer coefficient. in this kind of heat exchangers, flowand heat transfer are complicated. this paper reports a numerical investigation of theinfluence of different parameters such as coil...

Small-angle neutron scattering (SANS) measurements were performed on a solution of single-strand DNA, 5'-ATGCTGATGC-3', in sodium phosphate buffer solution at 10 degrees C temperature increments from 25 degrees C to 80 degrees C. Cylindrical, helical, and random coil shape models were fitted to the SANS measurements at each temperature. All the shapes exhibited an expansion in the diameter dire...

Pitch button blocking (PBB), involving attaching small pitch buttons between the back of a thin workpiece (i.e., optic) and a blocking plate, enables noncompliant convergent polishing in which the workpiece stiffness and block interface strength are maintained. This process has been optimized, and practical design criteria (number, size, and spacing of pitch buttons) have been determined both e...

Abstract Various combinations of objective functions and design variables have been considered in several optimization studies ground heat exchangers (GHEs). In this study, the optimum values coil pitch diameter a helical-shaped GHE were determined to maximize its convection transfer rate. Central composite was used determine dimensions be modeling. Nine models generated Fusion360 which then ex...