Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
On the sensitivity of the maximum explosion pressure of a dust deflagration to turbulence
The maximum explosion pressure of a deflagration is often regarded as a thermodynamicquantity and it is believed to be insensitive to the flow conditions of the combustiblemixture involved. While this is true for premixed gases, the present workdemonstrates that the opposite is the case when powder-air mixtures are ignited todeflagration. In order to illustrate this disparate behavior, experiments wereconducted with methane-air and cornstarch-air mixtures of a fixed fuel to air ratio,at varying turbulence levels. The maximum explosion pressure of cornstarch-air mixtureswas observed to increase by a factor of 1.5 when the turbulence level of the dust cloud wasvaried. An explanation for this behavior is proposed by considering the effect of turbulenceon the liberation of volatile matter from the particles.
On the sensitivity of the maximum explosion pressure of a dust deflagration to turbulence
The maximum explosion pressure of a deflagration is often regarded as a thermodynamicquantity and it is believed to be insensitive to the flow conditions of the combustiblemixture involved. While this is true for premixed gases, the present workdemonstrates that the opposite is the case when powder-air mixtures are ignited todeflagration. In order to illustrate this disparate behavior, experiments wereconducted with methane-air and cornstarch-air mixtures of a fixed fuel to air ratio,at varying turbulence levels. The maximum explosion pressure of cornstarch-air mixtureswas observed to increase by a factor of 1.5 when the turbulence level of the dust cloud wasvaried. An explanation for this behavior is proposed by considering the effect of turbulenceon the liberation of volatile matter from the particles.
On the sensitivity of the maximum explosion pressure of a dust deflagration to turbulence
Dahoe, A.E. (Autor:in) / Nat, van der, K. (Autor:in) / Braithwaite, M. (Autor:in) / Scarlett, B. (Autor:in)
01.01.2001
Dahoe , A E , Nat, van der , K , Braithwaite , M & Scarlett , B 2001 , ' On the sensitivity of the maximum explosion pressure of a dust deflagration to turbulence ' , KONA Powder and Particle Journal , vol. 2001 , no. 19 , pp. 178-196 . https://doi.org/10.14356/kona.2001021
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
On the Sensitivity of the Maximum Explosion Pressure of a Dust Deflagration to Turbulence
| DOAJ | 2014
Standard on explosion protection by deflagration venting
| TIBKAT | 2018
Approach determining maximum rate of pressure rise for dust explosion
| Tema Archiv | 2014
A constant pressure dust explosion experiment
| Tema Archiv | 2013
Experimental study of deflagration to detonation transition of hydrogen-air gas explosion
| BASE | 2024