Journal ArticleDOI
Development of a CFD crop submodel for simulating microclimate and transpiration of ornamental plants grown in a greenhouse under water restriction
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TLDR
A specific submodel is developed to simulate the distributed transpiration and microclimate during plants grown in pots inside greenhouses under water restriction conditions and the ability of the model to correctly predict transpiration, air and leaf temperatures as well as air humidity inside the greenhouse for both water regimes is shown.About:
This article is published in Computers and Electronics in Agriculture.The article was published on 2017-07-01. It has received 41 citations till now. The article focuses on the topics: Transpiration & Greenhouse.read more
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Review on greenhouse microclimate and application: Design parameters, thermal modeling and simulation, climate controlling technologies
Noureddine Choab,Amine Allouhi,Anas El Maakoul,Tarik Kousksou,Said Saadeddine,Abdelmajid Jamil +5 more
TL;DR: In this paper, the selection process of the greenhouse shape and orientation for different climates is presented, and comparisons between several shapes and orientations are made, and the existing thermal models and simulation tools used to optimize the thermal operating conditions of a greenhouse.
Journal ArticleDOI
Internet of things for smart farming and frost intelligent control in greenhouses
TL;DR: An intelligent anti-frost irrigation management system that interacts with the environmental system through a website, allowing the real time interconnection, acquisition and monitoring of information through mobile phone systems (GSM/GPRS) and internet (TCP/IP) services.
Journal ArticleDOI
Climate assessment of greenhouse equipped with south-oriented PV roofs: An experimental and computational fluid dynamics study
TL;DR: In this article, the effect of the shading induced by south oriented photovoltaic panels on the distributed climate and plant activities in a mono-span greenhouse using CFD tool was investigated.
Journal ArticleDOI
Technological progresses in modern sustainable greenhouses cultivation as the path towards precision agriculture
TL;DR: In this paper, the authors present an overview of the most recent technological advances in modern greenhouses, and highlight their application in hardware design, environmental monitoring, dynamics modeling, microclimate control, energy optimization, green energy integration and storage systems implementation.
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CFD analysis for evaluating and optimizing spatial distribution of CO2 concentration in a strawberry greenhouse under different CO2 enrichment methods
TL;DR: 3D computational fluid dynamics models for CO2 enrichment methods in a strawberry greenhouse found that crop-local enrichment can increase CO2 concentration only around crops albeit with less effect on those at the upper part of the greenhouse.
References
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Journal ArticleDOI
A closed-form equation for predicting the hydraulic conductivity of unsaturated soils
van Genuchten,M. Th. +1 more
TL;DR: Van Genuchten et al. as mentioned in this paper proposed a closed-form analytical expression for predicting the hydraulic conductivity of unsaturated soils based on the Mualem theory, which can be used to predict the unsaturated hydraulic flow and mass transport in unsaturated zone.
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The numerical computation of turbulent flows
Brian Launder,D. B. Spalding +1 more
TL;DR: In this paper, the authors present a review of the applicability and applicability of numerical predictions of turbulent flow, and advocate that computational economy, range of applicability, and physical realism are best served by turbulence models in which the magnitudes of two turbulence quantities, the turbulence kinetic energy k and its dissipation rate ϵ, are calculated from transport equations solved simultaneously with those governing the mean flow behaviour.
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Principles of Environmental Physics
TL;DR: In this paper, the second edition of the Second edition, the authors present a list of symbolic symbols for the field of environmental physical sciences, including the following: 1.GAS LAWS Pressure, volume and temperature Specific heats Lapse rate Water and water vapour Other gases 3. TRANSPORT LAWS General transfer equation Molecular transfer processes Diffusion coefficients Radiation laws 4. RADI ENVIRONMENT Solar radiation Terrestrial radiation Net radiation 5. MICROCLIMATOLOGY OF RADIATION (i) Interception Direct solar radiation Diffuse radiation Radiation in
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The Interpretation of the Variations in Leaf Water Potential and Stomatal Conductance Found in Canopies in the Field
TL;DR: In this paper, the stomatal conductance of illuminated leaves is a function of current levels of temperature, vapour pressure deficit, leaf water potential (really turgor pressure) and ambient CO $_2$ concentration and when plotted against any one of these variables a scatter diagram results.
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Canopy temperature as a crop water stress indicator
TL;DR: In this paper, a crop water stress index (CWSI) was calculated using infrared thermometry, along with wet and dry-bulb air temperatures and an estimate of net radiation.