In order to obtain an overall and systematic understanding of the performance of a two-stage light gas gun (TLGG), a numerical code to simulate the process occurring in a gun shot is advanced based on the quasi-one-di...In order to obtain an overall and systematic understanding of the performance of a two-stage light gas gun (TLGG), a numerical code to simulate the process occurring in a gun shot is advanced based on the quasi-one-dimensional unsteady equations of motion with the real gas effect, friction and heat transfer taken into account in a characteristic formulation for both driver and propellant gas. Comparisons of projectile velocities and projectile pressures along the barrel with experimental results from JET (Joint European Torus) and with computational data got by the Lagrangian method indicate that this code can provide results with good accuracy over a wide range of gun geometry and loading conditions.展开更多
Being one of the greatest 20 thcentury writers, William Faulkner was rewarded with the Nobel Prize for literature in1949. For his whole life, he created many novels which were given high appraisal and remained popular...Being one of the greatest 20 thcentury writers, William Faulkner was rewarded with the Nobel Prize for literature in1949. For his whole life, he created many novels which were given high appraisal and remained popular up to today. Light in August, carrying as the representative of Faulkner's novels, is not an exception as to the digging about individual's formation about identity. In the light of Lacan's theory of Mirror Stage, this paper tries to evaluate Faulkner's discussion over the formation of individual's identity with Joe Christmas as the example.展开更多
In order to study the light flash radiant intensity produced by strong shock on a 2A12 aluminum target at the same projectile incidence angles and different shock velocities,experimental measurements were conducted fo...In order to study the light flash radiant intensity produced by strong shock on a 2A12 aluminum target at the same projectile incidence angles and different shock velocities,experimental measurements were conducted for light flash phenomena of a 2A12 aluminum projectile impacting a 2A12 aluminum target under the conditions of different impact velocity and the same projectile incidence angles of 45° by using an optical pyrometer measurement system and a two-stage light gas gun loading system.Experimental results show that the peak values of the light flash radiant intensity for the wavelength of 550 nm are largest in the wavelength ranges of 600 nm,650 nm and 700 nm when a 2A12 aluminum projectile impacts a double-layer 2A12 aluminum plate in the present experimental conditions.展开更多
文摘In order to obtain an overall and systematic understanding of the performance of a two-stage light gas gun (TLGG), a numerical code to simulate the process occurring in a gun shot is advanced based on the quasi-one-dimensional unsteady equations of motion with the real gas effect, friction and heat transfer taken into account in a characteristic formulation for both driver and propellant gas. Comparisons of projectile velocities and projectile pressures along the barrel with experimental results from JET (Joint European Torus) and with computational data got by the Lagrangian method indicate that this code can provide results with good accuracy over a wide range of gun geometry and loading conditions.
文摘Being one of the greatest 20 thcentury writers, William Faulkner was rewarded with the Nobel Prize for literature in1949. For his whole life, he created many novels which were given high appraisal and remained popular up to today. Light in August, carrying as the representative of Faulkner's novels, is not an exception as to the digging about individual's formation about identity. In the light of Lacan's theory of Mirror Stage, this paper tries to evaluate Faulkner's discussion over the formation of individual's identity with Joe Christmas as the example.
基金supported by National Natural Science Foundation of China(Nos.10972145,11272218,11472178)State Key Program of National Natural Science of China(No.11032003)Program for Liaoning Excellent Talents in University,China(No.LR2013008)
文摘In order to study the light flash radiant intensity produced by strong shock on a 2A12 aluminum target at the same projectile incidence angles and different shock velocities,experimental measurements were conducted for light flash phenomena of a 2A12 aluminum projectile impacting a 2A12 aluminum target under the conditions of different impact velocity and the same projectile incidence angles of 45° by using an optical pyrometer measurement system and a two-stage light gas gun loading system.Experimental results show that the peak values of the light flash radiant intensity for the wavelength of 550 nm are largest in the wavelength ranges of 600 nm,650 nm and 700 nm when a 2A12 aluminum projectile impacts a double-layer 2A12 aluminum plate in the present experimental conditions.
