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Numerical simulations are performed for the two-dimensional magneto-convective transport of Cu-H 2 O nanofluid in a vertical lid-driven square cavity in the presence of a heatconducting and rotating circular cylinder. The left wall of the cavity is allowed to translate at a constant velocity in the vertically upward direction. Both left and right walls are maintained at isothermal but different temperatures. The top and bottom walls of the enclosure are thermally insulated. At the central region of the cavity is a heat-conducting circular cylinder which can rotate either clockwise or counterclockwise. A constant horizontal magnetic field of amplitude B 0 is applied perpendicular to the vertical walls. The nanofluid is electrically conducting, while the solid walls are considered electrically insulated. Simulations are performed for various controlling parameters, such as Richardson number (0.01 Ri 10), Hartmann number (0 Ha 50), dimensionless rotational speed of the cylinder (X ¼ AE1), and nanoparticle concentration (0 u 0.3), while Reynolds number based on lid velocity is fixed at a specific value (Re ¼ 100). The flow and thermal fields are found to be susceptible to changes in the magnetic field and mixed convective strength, as well as nanoparticle concentration. However, the direction of cylinder rotation is observed to have little or no influence quantitatively on global hydrodynamic and thermal parameters.

Nonossifying fibromas (NOFs) are benign bone tumors occurring in the second decade of life. Most of the NOFs are diagnosed incidentally on the basis of its presentation on plain radiographs where they typically appear as small, cortical osteolytic lesions with sclerotic margin. They are mostly asymptomatic but can result in pathologic fractures if the lesion involves more than 50% of bone diameter. They are mostly treated with curettage and bone grafting. But in challenging situations where the classical surgery has failed or there is impending fracture of the neck of femur, bone structural support is needed. We are discussing two cases diagnosed as NOFs of intracapsular femoral neck. Both cases underwent curettage of tumor followed by free vascularized fibular graft. Results in both the cases were very gratifying, with complete resolution of symptoms during 1 year of follow-up.

The Segmented Ultralight Morphing Rotor (SUMR) concept for a 50 MW wind turbine will help alleviate the technical challenges presented by a conventional upwind rotor design for such extreme-scale wind turbines. Such segmented rotor blades can be morphed to achieve load alignment which will significantly reduce the cantilever moments, thus allowing for a lighter blade design. Depending on the wind speed, these rotors may be morphed into highly coned configurations. Consequently, a computational tool was developed in this study for the analysis of the SUMR rotors in different morphing configurations. The analysis tool was developed by modifying the Blade Element Momentum method for the morphing rotor geometry. The model was implemented in a MATLAB code, BladeMorph, and will be subsequently combined with PROPID for the purpose of rapid design and analysis of the large-scale SUMR rotors. An example 13 MW SUMR rotor, referred to as the E-13 rotor in this paper, was designed in PROPID and analyzed in BladeMorph for various cone angles to obtain the C P and C T vs tip speed ratio curves and radial distributions of pertinent aerodynamic parameters. The predictions from BladeMorph were then compared with AeroDyn v14, and it was found that the predictions from both codes were in fairly good agreement. A large reduction in both rotor power and rotor thrust coefficients with an increase in coning angles was found. The angles of attack α, lift coefficient C l , and drag cofficient C d along the blade length were reduced at higher coning, while the variation in the net relative velocity, Reynolds number, and dynamic pressure along the blade was found to be minimal. Finally, with increasing coning, the axial induction distribution was found to increase toward the outboard region of the blade compared with the zero coning case, while decreasing near the inboard region of the blade.

This paper discusses the development of wind tunnel test capabilities at the University of Illinois at Urbana-Champaign to obtain the aerodynamic performance of highly-coned subscale wind turbine rotor configurations as part of the ARPA-E funded project to design extreme-scale Segmented Ultralight Morphing Rotors (SUMR). The scaled rotors were designed to be configurable for various coning and pitch angles. Many challenges were associated with testing at these small scales numbers due to the small forces generated, Reynolds number effects, and the high rotor rotation rates required. Rotors were tested at freestream velocities from 4.5 m/s to 9.5 m/s at various coning angles (0 to 50 deg) and pitch angles (4-8 deg). The results obtained can be used to further validate blade element momentum theory (BEMT) codes developed for design and analysis of highly-coned rotors.