Search Results - "Mikkelsen, Robert"

Simulation of wind turbine wakes using the actuator line technique by Sørensen, Jens N., Mikkelsen, Robert F., Henningson, Dan S., Ivanell, Stefan, Sarmast, Sasan, Andersen, Søren J.

“…The actuator line technique was introduced as a numerical tool to be employed in combination with large eddy simulations to enable the study of wakes and wake…”
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Turbulence and entrainment length scales in large wind farms by Andersen, Søren J., Sørensen, Jens N., Mikkelsen, Robert F.

“…A number of large wind farms are modelled using large eddy simulations to elucidate the entrainment process. A reference simulation without turbines and three…”
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Struvite precipitation in anaerobic swine lagoon liquid: effect of pH and Mg:P ratio and determination of rate constant by Nelson, Nathan O., Mikkelsen, Robert L., Hesterberg, Dean L.

“…Because of increased concern about surface water eutrophication from nutrient-enriched agricultural runoff, many swine producers are encouraged to decrease…”
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“4R” Nutrient Stewardship Framework for Horticulture by Mikkelsen, Robert L

“…Improving plant nutrient management is important for environmental, economic, and social considerations. The adoption of the "4R" nutrient stewardship…”
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Experimental Investigation of Static Stall Hysteresis and 3-Dimensional Flow Structures for an NREL S826 Wing Section of Finite Span by Sarlak, Hamid, Frère, Ariane, Mikkelsen, Robert, Sørensen, Jens

“…Flow characteristics of an S826 airfoil at different Reynolds numbers, ranging from 40,000–400,000 (based on airfoil chord length) and angles of attack from…”
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Field-scale evaluation of phosphorus leaching in acid sandy soils receiving swine waste by Nelson, N.O, Parsons, J.E, Mikkelsen, R.L

“…Accurate descriptions of P leaching are important because excess P applied to soils can enter surface water via leaching and subsurface transport, thereby…”
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Managing Potassium for Organic Crop Production by Mikkelsen, R.L

“…An adequate potassium (K) supply is essential for both organic and conventional crop production. Potassium is involved in many plant physiological reactions,…”
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Wind tunnel testing of a swept tip shape and comparison with multi-fidelity aerodynamic simulations by Barlas, Thanasis, Georg Raimund Pirrung, Ramos-García, Néstor, Sergio González Horcas, Robert Flemming Mikkelsen, Olsen, Anders Smærup, Gaunaa, Mac

“…One promising design solution for increasing the efficiency of modern horizontal axis wind turbines is the installation of curved tip extensions. However,…”
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Runoff phosphorus losses as related to phosphorus source, application method, and application rate on a Piedmont soil by Tarkalson, D.D, Mikkelsen, R.L

“…Land application of animal manures and fertilizers has resulted in an increased potential for excessive P losses in runoff to nutrient-sensitive surface…”
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Phosphorus Losses in Runoff after Application of Litter from Broilers Fed High-Available Phosphorus Corn Feed by Tarkalson, D.D, Mikkelsen, R.L

“…Recent efforts to reduce phosphorus (P) content of corn grain fed to poultry have led to the development of low-phytic-acid corn. Research is needed to…”
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Runoff phosphorus losses as related to soil test phosphorus and degree of phosphorus saturation on Piedmont soils under conventional and no-tillage by Tarkalson, D.D, Mikkelsen, R.L

“…Elevated soil phosphorus (P) concentrations on agricultural land from the application of P in fertilizers and animal manures have increased the potential for…”
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The role of low molecular weight organic acids from decomposing rye in inhibiting root-knot nematode populations in soil by McBride, Robert G, Mikkelsen, Robert L, Barker, Kenneth R

“…Organic soil amendments have been employed as an alternative to or in combination with, chemical nematicides and cultural practices to control plant-parasitic…”
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Nitrogen availability of anaerobic swine lagoon sludge: sludge source effects by Moore, Amber D., Israel, Daniel W., Mikkelsen, Robert L.

“…Increased numbers of swine producers will be removing sludge from their anaerobic waste treatment lagoons in the next few years, due to sludge exceeding…”
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Using Tobacco By‐products as a Nitrogen Source for Container‐Grown Houseplants by Mikkelsen, Robert L

“…There is continuing interest in using various agricultural by‐products as organic nutrient sources for plants. This experiment was designed to evaluate the use…”
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Polyethersulfone Membrane Filters for Sampling Soil Water from In Situ Soils and Intact Soil Columns for Phosphate Analysis by Nelson, Nathan O., Mikkelsen, Robert L.

“…Porous plates or cups are commonly used to collect soil solution samples in field studies or from intact soil columns. Some commonly used materials for porous…”
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Fertilizer use for horticultural crops in the U.S. during the 20th century by Mikkelsen, R.L, Bruulsema, T.W

“…Tremendous changes have occurred during the past century in the sources and methods for supplying nutrients for horticultural crops. Reliance on animal manure,…”
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Analytical body forces in numerical actuator disc model of wind turbines by Sørensen, Jens Nørkær, Nilsson, Karl, Ivanell, Stefan, Asmuth, Henrik, Mikkelsen, Robert Flemming

“…An analytical model for representing body forces in numerical actuator disc models of wind turbines is developed and validated. The model is based on the…”
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UNAFLOW: a holistic wind tunnel experiment about the aerodynamic response of floating wind turbines under imposed surge motion by Fontanella, Alessandro, Bayati, Ilmas, Mikkelsen, Robert, Belloli, Marco, Zasso, Alberto

“…Floating offshore wind turbines are subjected to large motions due to the additional degrees of freedom of the floating foundation. The turbine rotor often…”
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Dry matter production, nutrient accumulation, and nutrient partitioning of barley by Rogers, Christopher W., Dari, Biswanath, Hu, Gongshe, Mikkelsen, Robert

“…Total dry matter (TDM) and nutrient accumulation, nutrient partitioning, and cumulative growing degree days at the time of maximum nutrient accumulation for…”
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Nitrogen mineralization of anaerobic swine lagoon sludge as influenced by seasonal temperatures by Moore, A.D, Mikkelsen, R.L, Israel, D.W

“…As anaerobic swine lagoons approach maximum sludge storage capacity, producers must periodically remove sludge and apply it to nearby fields. Information…”
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