کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
82860 158423 2007 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A 3D model for simulating the spatial and temporal distribution of temperature within ellipsoidal fruit
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علم هواشناسی
پیش نمایش صفحه اول مقاله
A 3D model for simulating the spatial and temporal distribution of temperature within ellipsoidal fruit
چکیده انگلیسی

A physical model simulating the spatio-temporal distribution of temperature in an ellipsoidal fruit has been developed. It is based on the numerical resolution of the three-dimensional (3D) unsteady heat conduction equation with unsteady and non-homogeneous heat fluxes as boundary conditions. The numerical scheme and the physical models have been tested by comparing with an analytical solution for simple configurations. The model quality has been assessed by comparing model outputs to temperature measured with thermocouples at several locations in isolated peach and apple fruits. The root mean square error (RMSE) for temperature simulated at a 1 min time step was about 0.8 °C. A sensitivity analysis showed that accurate estimations of the surface conductance to water vapor diffusion and of the thermal conductivity are necessary. The model has also been used for identifying the main microclimate variables governing temperature dynamics within fruits.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Agricultural and Forest Meteorology - Volume 147, Issues 1–2, 12 November 2007, Pages 1–15
نویسندگان
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