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Исследование реологических свойств водно-зерновых суспензий, приготовленных на основе измельченного солода

Исследование реологических свойств водно-зерновых суспензий, приготовленных на основе измельченного солода

Abstract

The article demonstrates the results of experiments with the rheological properties of malting suspensions and comparison of the received values for dynamic viscosity coefficient with the ones of barley suspensions. It is shown that malting suspensions have lower values of dynamic viscosity coefficients under comparable experimental conditions. The systematization of the array of experimental dates is made. The dates concerns the selection of three characteristic zones on the viscosity-temperature curves, separated by four reference points from each other: the beginning of the measurement process at the temperature of 25°C and dynamic viscosity coefficient; the lowest value of dynamic viscosity coefficient; the highest value of dynamic viscosity coefficient; the final value of dynamic viscosity coefficient. The mathematical relations giving the opportunity to predict the change of dynamic viscosity coefficient given the change of their numerical composition, temperature, and sliding velocity are given. It is shown that, if the sliding velocity is less than 234 с-1, malting suspensions have the lowest value of dynamic viscosity coefficient and then this value increases in course of time.

Проводили реологические исследования солодовенных суспензий и сравнивали полученные значения коэффициентов динамической вязкости с аналогичными коэффициентами ячменных суспензий. Показано, что солодовенные суспензии имеют более низкие значения коэффициентов динамической вязкости при сопоставимых условиях проведения эксперимента. Выполнена систематизация массива экспериментальных данных, заключающаяся в выделении на вязкостно-температурных кривых трех характерных зон, разделенных друг от друга четырьмя реперными точками: начало процесса измерений при температуре 25°C с коэффициентом динамической вязкости ; минимальное значение коэффициента динамической вязкости ; максимальное значение коэффициента динамической вязкости ; конечное значение коэффициента динамической вязкости. Представлены математические зависимости, дающие возможность прогнозировать изменение коэффициентов динамической вязкости при изменении их количественного состава, температуры и скорости сдвига. Отмечается, что у солодовых суспензий, при скоростях сдвига менее 234 с-1 наблюдалось наличие минимального значения коэффициента динамической вязкости, а затем, в течение некоторого периода времени, увеличение его значения.

Keywords

СОЛОДОВАЯ СУСПЕНЗИЯ,КОЭФФИЦИЕНТ ДИНАМИЧЕСКОЙ ВЯЗКОСТИ,ПИВОВАРЕННОЕ ПРОИЗВОДСТВО,РЕПЕРНЫЕ ТОЧКИ,MALT SUSPENSION,DYNAMIC VISCOSITY COEFFICIENT,BREWERY,REFERENCE POINTS

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold