• No results found

Flame speed

Agricultural waste pulverised biomass: lean flammability and flame speed as a measure of reactivity

Agricultural waste pulverised biomass: lean flammability and flame speed as a measure of reactivity

... the flame speed for a given biomass, the correlation between different biomass in terms of the relative reactivity was not ...peak flame speeds for rice husk and bagasse dusts were ...the ...

16

Review of the impact of hydrogen addition to natural gas on gas turbine combustion

Review of the impact of hydrogen addition to natural gas on gas turbine combustion

... categories: flame speeds, emissions, combustion dynamics and ...laminar flame speed; the Bougrine relation appears to be the best one, however its limitations must be kept in mind when using ...

67

Flame Acceleration in Tube Explosions with up to Three Flat-bar Obstacles with Variable Obstacle Separation Distance

Flame Acceleration in Tube Explosions with up to Three Flat-bar Obstacles with Variable Obstacle Separation Distance

... on flame speed and ...a flame speed of about 500 m/s with 10% methane/air ...and flame speed with a separation pitch of ...

14

Assessment of elliptic flame front propagation characteristics of iso-octane, gasoline, M85 and E85 in an optical engine

Assessment of elliptic flame front propagation characteristics of iso-octane, gasoline, M85 and E85 in an optical engine

... fuel-air flame propagation is investigated in a single-cylinder, spark-ignited, four-stroke optical test engine using high-speed ...evaluate: flame area; flame speed; centroid; ...

29

Numerical modelling of vented lean hydrogen–air deflagrations using HyFOAM

Numerical modelling of vented lean hydrogen–air deflagrations using HyFOAM

... laminar flame speed, and in the mean time stretched and strained by the turbulent flow ...induced flame stretching increases flame surface area which results in an increase of the burning ...

8

Vent burst pressure effects on vented gas explosion reduced pressure

Vent burst pressure effects on vented gas explosion reduced pressure

... initial flame speed was slower than for free ...The flame propagation inside the vessel was continuing and this was made turbulent by the reverse flow through the ...the flame expansion pushed ...

21

Effects of obstacle separation distance on gas explosions: the influence of obstacle blockage ratio

Effects of obstacle separation distance on gas explosions: the influence of obstacle blockage ratio

... and flame speed of slightly above 2 bar and 200 m/s respectively for 10% by ...m/s flame speed with just 2 obstacles of the same blockage but optimally spaced, in the present ...

14

Flame spread behavior over combined fabric of cotton/polyester

Flame spread behavior over combined fabric of cotton/polyester

... important in selecting material for interior furniture such as bedclothes, clothing, etc. Those products are often fabricated from the combination of natural and synthetic materials. Combined fabric made of ...

5

Flame spread behavior over combined fabric of cotton/polyester

Flame spread behavior over combined fabric of cotton/polyester

... the flame spread behavior over combined fabric of ...of flame front for these angles. The flame spread rate is measured, which is obtained from the position of the most preceding point of the burning ...

5

Williams

Williams

... needed to solve the Rothermel (1972) basic fire spread equations based on cover types. For this analysis, the fuel models developed by Scott and Burgan (2005) were used. To model crown fires spatial files of stand ...

9

Fire Metrology: Current and Future Directions in Physics-Based Measurements

Fire Metrology: Current and Future Directions in Physics-Based Measurements

... While the radiative field around a wildland flame is fairly isotropic, that is, equal in all di- rections (B. Butler, Forest Service, personal communication), the convective field is highly non-isotropic and must ...

23

Influence of Material Composition on Flame Spread Behaviour over Combustible Solid of Paper/Bagasse

Influence of Material Composition on Flame Spread Behaviour over Combustible Solid of Paper/Bagasse

... of flame shape for every ...of flame spread. The solid and the dash lines represent the flame shape during combustion and when the flame extinguishes, ...shows flame spreads for pure ...

5

Analysis on structural parameters and operating parameters on gasoline engine detonation's effects

Analysis on structural parameters and operating parameters on gasoline engine detonation's effects

... rotational speed and the concentration of the mixed gas are ...rotational speed increase. Especially at a low speed, the detonation index is sharply decreased with the rotational speed ...

6

Stretch Rate Effects and Flame Surface Densities in Premixed Turbulent Combustion up to 1.25 MPa

Stretch Rate Effects and Flame Surface Densities in Premixed Turbulent Combustion up to 1.25 MPa

... The horizontal burner, shown in Fig. 3, fired into an inner combustion chamber, enclosed within an optical pressure casing. The optically accessed combustion section was connected to a compressor and heat exchanger, ...

28

Electrochemistry in the gas phase

Electrochemistry in the gas phase

... using flame B, in which the LHS flame was not seeded with any additive and the RHS flame was seeded with various concentrations o f metal ...unseeded flame in the reference ...

118

Effects of Leading-Edge Flame Behavior on Flame Stabilization and Blowout

Effects of Leading-Edge Flame Behavior on Flame Stabilization and Blowout

... the flame was re-ignited at the fuel nozzle and allowed to move downstream and eventually ...the flame was re-ignited from the nozzle with ...diffusion flame has been significantly reduced and the ...

170

ADAPTIVE EDGE DETECTION ALGORITHM FOR FLAME AND FIRE IMAGES

ADAPTIVE EDGE DETECTION ALGORITHM FOR FLAME AND FIRE IMAGES

... Automatic flame or fire detection systems play a major role in the early detection and response of an unexpected fire ...of flame or fire edges is the process of identifying a boundary between the area ...

7

DNS Analysis on the Indirect Relationship between the Local Burning Velocity and the Flame Displacement Speed of Turbulent Premixed Flames

DNS Analysis on the Indirect Relationship between the Local Burning Velocity and the Flame Displacement Speed of Turbulent Premixed Flames

... The flame displacement speed and the local burning velocity have been investigated separately, because the flame displacement speed can be used for the discussion of flame-turbulence ...

11

A SURVEY ON: FIRE DETECTION USING IMAGE PROCESSING

A SURVEY ON: FIRE DETECTION USING IMAGE PROCESSING

... Çelik and Demirel et. al., in 2008 describe a rule-based generic color model for flame pixel classification. The proposed algorithm uses YCbCr color space. The proposed color model can be used in fire detection in ...

6

/N flames presented in [6] are simulated by the

/N flames presented in [6] are simulated by the

... causes flame having higher content of CH4 thus taking longer distance to be fully ...long flame length is the result. Similar to CO, the longer flame length compensates the lower flame ...

5

Show all 10000 documents...

Related subjects