@article{crozier_havlin_hoyt_rideout_mcdaniel_2009, title={Three Experimental Systems to Evaluate Phosphorus Supply from Enhanced Granulated Manure Ash}, volume={101}, ISSN={["0002-1962"]}, DOI={10.2134/agronj2008.0187x}, abstractNote={Three experimental systems were used to evaluate a new P fertilizer since residual P levels at typical farm sites may make response detection unlikely. The systems were (i) greenhouse with low P soil, (ii) long‐term research sites with preexisting soil P gradients, and (iii) agricultural fields with prior P fertilization based on agronomic recommendations. The new fertilizer (animal waste by‐product, AWP: 5% N, 28% P2O5, 4% K2O, and 1% S) is an enhanced granulated manure ash. Corn (Zea mays L.), wheat (Triticum aestivum L.), and soybean [Glycine max (L.) Merr.] growth, P uptake, and residual soil Mehlich‐3 P were measured with agronomic rates of AWP or triple superphosphate (TSP). Greenhouse corn and wheat P uptake, and soil Mehlich‐3 P increased similarly with either fertilizer at rates equivalent to 0, 10, 20, 40, and 80 kg P ha−1. In long‐term research sites, grain yield increased with P fertilization in 8 of 12 tests, and was greater with TSP than with AWP in 3 of 12 tests. Plant P uptake increased in all 12 tests, and was greater with TSP in 1 of 12 tests. In previously fertilized agricultural fields, soil Mehlich‐3 P, but not yield, increased due to P fertilization. Fertilizer source differences were infrequent and relatively minor, but possibly due to lower water soluble P content of the AWP (70% versus 78% for TSP). Evaluation of such products requires an appropriate experimental system with low P soils that may be difficult to find on typical North Carolina farms.}, number={4}, journal={AGRONOMY JOURNAL}, author={Crozier, C. R. and Havlin, J. L. and Hoyt, G. D. and Rideout, J. W. and McDaniel, R.}, year={2009}, pages={880–888} }
 @article{mcdaniel_hassan_2001, title={Study of transition in a high-disturbance environment}, volume={38}, ISSN={["0021-8669"]}, DOI={10.2514/2.2892}, abstractNote={A theory is developed for a form of bypass transition that is induced by a high-disturbance environment and is used to study transitional e ows at low speeds. It employs an approach similar to that developed for natural transition. In this approach, transitional e ows are treated in a turbulencelike manner, and transition onset and extentaredeterminedaspartofthesolution.Itisshownthatthisform ofbypasstransitionisaresultofareceptivity mechanism, where the disturbance is characterized by a scale different from that of Tollmien ‐Schlichting waves. The theory is calibrated and validated by considering a range of low-speed e ows, with high freestream turbulence intensities, in the presence and absence of pressure gradients, referred to as the T3 test cases. Excellent agreement with measurements is indicated. It is suggested that transition in one of the test cases, T3C4, is a result of the bursting of a laminar separation bubble.}, number={6}, journal={JOURNAL OF AIRCRAFT}, author={McDaniel, RD and Hassan, HA}, year={2001}, pages={1051–1055} }
 @article{mcdaniel_hassan_2001, title={Transition mechanisms in conventional hypersonic wind tunnels}, volume={38}, ISSN={["0022-4650"]}, DOI={10.2514/2.3691}, abstractNote={A recently developed theory that addresses bypass transition is used to study mechanisms responsible for transition in two-dimensional/axisymmetric e ows in conventional hypersonic wind tunnels. It is shown that transition in such facilities, where the intensity is in excess of 1%, is a result of a combined bypass/second-mode mechanism. This mechanism is validated by comparing predictions of the theory with heat transfer measurements carried out for straight and e ared sharp cones at zero angle of attack, a Mach number of 7.93, and unit Reynolds numbers of 1.6‐8.2 £ 10 6 /m. In general, good agreement with experiment is indicated. Nomenclature a = model constants (e rst-mode) a1‐a3 = model constants dee ned in Eq. (6) b = model constants (second-mode ) cπ = constant, 0.09 k = turbulent kinetic energy, m 2 /s 2 M = Mach number Q m = rms of mass e ux, kg/m 2 ¢s N m = mean mass e ux, kg/m 2 ¢s P = pressure, Pa qw = heat e ux at the wall, W/m 2 Re = Reynolds number}, number={2}, journal={JOURNAL OF SPACECRAFT AND ROCKETS}, author={McDaniel, RD and Hassan, HA}, year={2001}, pages={180–184} }
 @article{mcdaniel_nance_hassan_2000, title={Transition onset prediction for high-speed flow}, volume={37}, ISSN={["0022-4650"]}, DOI={10.2514/2.3579}, abstractNote={An approach that treats nonturbulent e uctuations in a turbulencelike manner and determines onset and extent of transition as part of a e ow calculation isused to study transition athigh Mach numbers. Threesetsof previously obtained experimental data involving straight and e ared cones at zero angle of attack are used to calibrate and validate the model. Two sets, at Mach numbers 3.5 and 6, were carried out in quiet tunnels, and the third set was carried out at a Mach number of 8 in a conventional tunnel. The results suggest that the second mode is not the only mode responsible for transition at high Mach numbers. In general, fair to good agreement with measured recovery factors, adiabatic wall temperatures, and heat-transfer rates is indicated.}, number={3}, journal={JOURNAL OF SPACECRAFT AND ROCKETS}, author={McDaniel, RD and Nance, RP and Hassan, HA}, year={2000}, pages={304–309} }