干扰剪切流动(ISF)和边界层流动及ISF理论在计算流体力学(CFD)中的应用

简述作者提出的干扰剪切流动(ISF)理论、近壁复杂ISF理论、推论和它们在CFD中的应用.ISF是小黏性流体运动中普遍存在的一种基本流动,如驻点流、近壁黏性-无黏干扰流动,干扰可忽略时ISF的黏性部分为熟知的边界层流动.ISF理论揭示了高$Re$数流动计算的最佳坐标系和最佳网格生成.由近壁复杂ISF理论与流体运动方程组及流速在壁面无滑移条件相结合导出一组壁面相容(SC)判据,该判据提供了利用CFD仿真结果判断CFD仿真可信度的理论途径、并为近壁网格、算法和边界处理的改进和三者的更好协调、为湍流模型的评估、改进和发展提供了一种理论途径.      

基于扩展目标的不变矩跟踪算法

提出基于边缘区域的不变矩计算方法,在此基础上,针对在运动中形状、尺寸和方位不断变化的扩展目标,提出一种以不变矩作为跟踪特征,粗、精阶段相结合的相关跟踪算法,并根据目标图像的相关性给出一种新的跟踪置信度。实验结果显示算法迅速、有效、匹配精度高,对于复杂背景,较强噪声和运动状态发生变化条件下的扩展目标跟踪稳定可靠。     

基于扩展目标的不变矩跟踪算法

 提出基于边缘区域的不变矩计算方法，在此基础上，针对在运动中形状、尺寸和方位不断变化的扩展目标，提出一种以不变矩作为跟踪特征，粗、精阶段相结合的相关跟踪算法，并根据目标图像的相关性给出一种新的跟踪置信度。实验结果显示算法迅速、有效、匹配精度高，对于复杂背景，较强噪声和运动状态发生变化条件下的扩展目标跟踪稳定可靠。     

Two Game Models for Cooperation with Implicit Noncooperation

We propose two flexible game models to represent and analyze cases that cannot be modeled by current game models. One is called sharing creditability game (SCG) and the other is called bottomline game (BLG). The new models transform cooperative games into new games that incorporate auxiliary information (noncooperative in nature) usually neglected in previous theories. The new games will be solved only by traditional noncooperative game theory. When the new solutions are applied to the original games, the solutions can reflect the auxiliary information in addition to the original objectives of the decision makers or players. Generally, the new solutions are different from the cooperative and the noncooperative solutions of the original games. Existing transferable utility (TU) games and noncooperative games will coincide with special cases of the two new game models. Using SCG and BLG, the prisoner’s dilemma can be reformulated and a richer set of decisions can be considered for the players. The two new game models have potential applications in military and socioeconomic situations.This research was partly funded by the College Engineering, Ohio State University.